Patrick_GMATFix posted a reply to GMATFix's Official Guide Companion for OG 13th Edition? in the GMAT Strategy forum
“Hi Aniron, Thanks for your interest. that have followed the 12th edition, I decided to shift how I distribute my work from a book to software. You can gain access to all my solutions by using the GMATFix App, meant to be used in conjunction with the Study Guide I have posted online. Even ...”
September 16, 2014
Patrick_GMATFix posted a reply to My Thank You to BTG: GMATFix License Give-Away in the GMAT Strategy forum
“Hey Adam, I''m sorry there are no free licenses available at this time. You can install the App and just use it freely. You will not be asked to get a license until you''ve used it for a while. You said "all the access are blocked". Help me understand what you mean; feel free to ...”
June 10, 2014
Patrick_GMATFix posted a reply to My Thank You to BTG: GMATFix License Give-Away in the GMAT Strategy forum
“Please share what was wrong / how to fix. It would help others who run into a similar problem.”
April 12, 2014
Patrick_GMATFix posted a reply to My Thank You to BTG: GMATFix License Give-Away in the GMAT Strategy forum
“Sent you a private message”
April 12, 2014
Patrick_GMATFix posted a reply to My Thank You to BTG: GMATFix License Give-Away in the GMAT Strategy forum
“Have you restarted the App? Have you logged in? What happens when you try to play a video? You can report a bug or send feedback via the FEEDBACK button on the App''s launch screen. -Patrick http://snag.gy/vImw6.jpg”
April 12, 2014
Patrick_GMATFix posted a reply to My Thank You to BTG: GMATFix License Give-Away in the GMAT Strategy forum
“Hey Simon, I''ve given you access to the free license. Restart the App and hit the LICENSE button to see it. Happy prepping, Patrick”
April 12, 2014
Patrick_GMATFix posted a reply to Network of blood vessels and flight in the Critical Reasoning forum
“This looks familiar; I think someone posted this question recently. The answer is C. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5678_thumb.png -Patrick”
March 19, 2014
Patrick_GMATFix posted a reply to Poor production and a centralized economy in the Critical Reasoning forum
“The answer is D. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5670_thumb.png -Patrick”
March 19, 2014
Patrick_GMATFix posted a reply to Strait of Gilbraltar in the Sentence Correction forum
“The answer is B. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5772_thumb.png -Patrick”
March 19, 2014
Patrick_GMATFix posted a reply to Acme Bank services in the Sentence Correction forum
“The answer is B. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5772_thumb.png -Patrick”
March 19, 2014
Patrick_GMATFix posted a reply to Urgent help! Remainders question in the Data Sufficiency forum
“We know that b is an integer, but c may not be. Statement 1: If c is an integer, then 4c+2=b is even. 3b+1 is therefore odd and is not divisible by 10. If c is not an integer, we can make 4c+2 anything we want. If b=4c+2=3, then 3b+1 would equal 10 and would be divisible by 10. NOT ...”
March 18, 2014
Patrick_GMATFix posted a reply to If 2x(5n) = t, what is t? in the Data Sufficiency forum
“The initial equation corresponds to t = 10xn. To find t, we need xn. Rephrase: what is xn?. Neither statement alone allows us to find this but what about the statements together? Well together the provide two independent linear equations; we can find x from statement (2), then plug that into (1) ...”
March 18, 2014
Patrick_GMATFix posted a reply to How many wheel rotations? in the Data Sufficiency forum
“Number of rotations depends on the ratio of 100 meters distance to the circumference of the wheel. For instance, if 100 = 4*C, it will take 4 rotations to cover the distance. Since we know the total distance, all we need is the circumference. Rephrase: What is the circumference? The answer is A. ...”
March 18, 2014
Patrick_GMATFix posted a reply to Decrease hours to keep income the same in the Problem Solving forum
“We can plug in to solve quickly. Suppose we start with wage=$4 and hours=5, making income $20. If wage increase by 25% to $5, hours will drop to 4, a 20% drop. The answer is B. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 18, 2014
Patrick_GMATFix posted a reply to Negative exponents in the Problem Solving forum
“The negative exponent is the reciprocal of its positive counterpart. So 2^-3 = (1/2)^3, and (1/2)^-3 = 2^3. So we''re really asked to find 2^3 * 4^2 * 16. Notice that they are all powers of 2, so you can put them all in terms of the same base: 2^3 * (2^2)^3 * 2^4. The answer is B. I go through ...”
March 18, 2014
Patrick_GMATFix posted a reply to Laki Volcano eruption in the Critical Reasoning forum
“The right answer doesn''t have to disprove the argument; it only needs to make it less convincing. This is usually done by attacking assumptions or introducing new counter-premises. Since the only supporting evidence is a correlation between a previous eruption and a cold winter, the right answer ...”
March 17, 2014
Patrick_GMATFix posted a reply to Brand names and premium prices in the Critical Reasoning forum
“The right answer will explain how even though brand names don''t offer higher quality or sell at higher prices, brand names are a big marketing advantage. The answer is A. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 17, 2014
Patrick_GMATFix posted a reply to Josephine Baker in the Sentence Correction forum
“The answer is D. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5761_thumb.png -Patrick”
March 17, 2014
Patrick_GMATFix posted a reply to Larget bank and data-processing costs in the Sentence Correction forum
“Subject-Verb agreement "cost/costs...are prohibitive" Parallelism "costs of/associated with upgrading equipment...and with the development..." The answer is B. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 17, 2014
Patrick_GMATFix posted a reply to When was the order filled? in the Data Sufficiency forum
“(1) is not sufficient since we have no restriction on when the machine finished the job. (2) is sufficient. It tells us how much work has been completed at two points in time, so we know how fast the machine works and we can project how much longer it will take to finish the job. The answer is ...”
March 17, 2014
Patrick_GMATFix posted a reply to Is xy > 5? in the Data Sufficiency forum
“We''re never given enough data. Even when you combine the statements, if (x,y) = (1,4) then xy < 5. However if (x,y)=2,3) then xy > 5. The answer is E. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 17, 2014
Patrick_GMATFix posted a reply to Probability that X and Y solve in the Problem Solving forum
“To solve we need to understand 2 things: > Prob(success) + Prob(failure) = 1 for each individual > Prob(independent events A and B both happen) = Prob(A) * Prob(B) The answer is E. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 17, 2014
Patrick_GMATFix posted a reply to Resistors connected in parallel in the Problem Solving forum
“Do not confuse "r is the combined resistance of the two resistors" with "r is the sum of x and y". It is the next sentence that gives us the equation we need. "the reciprocal of r is the sum of the reciprocals of x and y" means that 1/r = 1/x + 1/y The answer is D. I ...”
March 17, 2014
Patrick_GMATFix posted a reply to Small-business and the minimum wage in the Critical Reasoning forum
“This is a Resolve-Explain (Resolve the Paradox) question. The right answer will explain why small-business groups oppose raising the minimum wage even though the law would exempt them from paying the new wage. These businesses must expect a negative outcome (negative for them) from the law that ...”
March 15, 2014
Patrick_GMATFix posted a reply to Banned imports in the Critical Reasoning forum
“Questions that ask you to draw a conclusion, or to find the answer that is best supported by the passage are inference questions. The right answer to such questions is the one that can be proven from the premises alone, without the need for additional assumptions. The answer is A. I go through ...”
March 15, 2014
Patrick_GMATFix posted a reply to The plot of The Bostonians in the Sentence Correction forum
“The correct answer must correctly use the idiom "rivalry between x and y" where x and y are parallel. The answer is C. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5755_thumb.png -Patrick”
March 15, 2014
Patrick_GMATFix posted a reply to Dr Tonegawa Nobel Prize in the Sentence Correction forum
“An adjective (seeming) cannot be used to modify an adverb (unlimited); seemingly is needed. the idiom "targeted at" is also tested. The answer is E. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 15, 2014
Patrick_GMATFix posted a reply to A tricky PS here in the Problem Solving forum
“You are over-thinking it Daniel. Profit is always total revenues - total expenses. Think in real world terms. If you buy a toy for $100, and the manufacturer gives you a 50% refund, what did you actually spend? Only $50!. The problem with your formula is that at the end of the day, the merchant ...”
March 14, 2014
Patrick_GMATFix posted a reply to A tricky PS here in the Problem Solving forum
“Daniel, It is true that the correct ratio is the reverse of your original ratio, but that''s just a coincidence. I didn''t actually reverse your ratio. My post explains how I came up with the right ratio. As for your 2nd question, the weights should not be the actual amounts of time, but ...”
March 14, 2014
Patrick_GMATFix posted a reply to A tricky PS here in the Problem Solving forum
“Hi Daniel, The guys above explained good ways to solve; I just wanted to address your question about why your method did not work. In fact, weighted average does work. It is good that you recognized that it should; you just did not apply it correctly. Remember that the weights in weighted ...”
March 14, 2014
Patrick_GMATFix posted a reply to OG11 Q89.... Do help in the Critical Reasoning forum
“I think the easiest way to eliminate E is to use the negation test. If you negate a real assumption, the conclusion will no longer make sense. the argument uses the fact that a dinosaur had a network of blood vessels whose purpose was to disperse heat generated by wing flapping to conclude that ...”
March 14, 2014
Patrick_GMATFix posted a reply to How many integers between r and s? in the Data Sufficiency forum
“IN evaluating statement (1), be careful not to assume that r and s are integers. You''ll get different answers for (s,r)=(5,0) and (s,r)=(5.5, 0.5). There are 4 integers between 0 and 5, but 5 integers between 0.5 and 5.5 so we cannot definitively answer the question from (1) alone. We have to ...”
March 13, 2014
Patrick_GMATFix posted a reply to What was price per share of the stock? in the Data Sufficiency forum
“Great question. The answer is D. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/6746_thumb.png -Patrick”
March 13, 2014
Patrick_GMATFix posted a reply to By how much do the digits differ? in the Problem Solving forum
“Any two-digit number (eg: 27) can be expressed as 10*tens + 1*units (eg: 10*2 + 7). This is the basis for how to solve this question quickly. The difference between 2 two-digit numbers with the same digits in reverse order can be expressed as (10t+u) - (10u+t) where t and u are the original tens ...”
March 13, 2014
Patrick_GMATFix posted a reply to Find the equation of the line in the Problem Solving forum
“Equation of the line is y=mx+b where m is the slope and b is the y-intercept. In this case, the slope (change in y / change in x) is -2/3 (calculated from the two known points). The y-intercept (where the line crosses the y-axis is 2. So the equation of the line is y = (-2/3)x + 2. Manipulate it to ...”
March 13, 2014
Patrick_GMATFix posted a reply to Break up topic wise Quant review 2 in the GMAT Math forum
“FYI, you can use the GMATFix App to filter questions by topic/difficulty. Verbal and quant questions from the OG10, OG11, OG12, OG13, OG Quant review 1 & 2, and OG Verbal review 1 & 2 can be filtered this way. http://snag.gy/DYL2t.jpg http://snag.gy/h4kCY.jpg -Patrick GMATFix”
March 13, 2014
Patrick_GMATFix posted a reply to Algebra ! in the Data Sufficiency forum
“I would use logical deduction to solve. (1) doesn''t tell us about c. (2) doesn''t tell us about a. Together: ac > 5 if we make c really big (statement 2 allows us to do this - no upper limit on c). ac < 5 if we make a really tiny (0.0000001. Statement 1 allows this) We cannot ...”
March 13, 2014
Patrick_GMATFix posted a reply to x is +ve ??? in the Data Sufficiency forum
“Often the easiest way to solve absolute value Qs is to think of abs. val. as a measure of distance. |a - b| is the distance between a and b on the number line. |10-5| = |5-10| = distance between 5 and 10. |10+5| = |10 - (-5)| = distance between 10 and -5. Ok let''s solve. ...”
March 13, 2014
Patrick_GMATFix posted a reply to OG based DS problem in the Data Sufficiency forum
“Thanks that''s kind of you. I''m actually writing code for it right now (well I stopped to type this reply). Weighted Avg means that the average is the result of a mix adjusted for the weights of the components. For example, if a room contains 60% women and 40% men, the weighted avg of any ...”
March 13, 2014
Patrick_GMATFix posted a reply to OG based DS problem in the Data Sufficiency forum
“This is a weighted average and inequality problem. You can use the GMATFix App to filter questions and create drills targeting the specific topic you want to master; you can also filter by difficulty level if you wish. http://snag.gy/DYL2t.jpg http://snag.gy/h4kCY.jpg -Patrick GMATFix”
March 13, 2014
Patrick_GMATFix posted a reply to Convention for Fractions with Radicals! in the Problem Solving forum
“You are right about the convention, but "never" is too strong. Your answer is mathematically equivalent to the book''s answer so your answer is right. On the test, let the answer choices guide you. Most of the time you will need to get rid of the root in the denominator, but not ...”
March 13, 2014
Patrick_GMATFix posted a reply to Women scientists in the Sentence Correction forum
“The two comparisons are not structured the same way even if it seems that they are. The placement of the pronoun (blue) and the referent (green) was switched; in the first part referent is in the independent clause and the pronoun that points to it is in the subordinate modifying phrase. The ...”
March 13, 2014
Patrick_GMATFix posted a reply to Female church ministers in the Sentence Correction forum
“You''re right of course. I meant "much" referring to answer A; i will fix the typo. Thank you. -Patrick”
March 12, 2014
Patrick_GMATFix posted a reply to GMAC Paper Test in the Critical Reasoning forum
“D is irrelevant because the argument does not rely on ppl''s ability to understand why they are emotionally well/unwell. It relies only on the existence of a cause-effect relationship between intimacy in early life and emotional well-being in later life (whether the subjects tested are aware of this ...”
March 12, 2014
Patrick_GMATFix posted a reply to Payload in the Critical Reasoning forum
“I also think C is the best answer since it suggests that the triple-trailers have fewer accidents because they''re driven on lightly traveled roads. Therefore replacing all other HMVs (which travel on more populated roads) with triple-trailers will likely increase the accident rates of ...”
March 12, 2014
Patrick_GMATFix posted a reply to Excavation of Kourion in the Critical Reasoning forum
“To strengthen the argument, the right answer will give us an additional reason to believe that the city was destroyed by the AD 365 earthquake. The answer is B. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 12, 2014
Patrick_GMATFix posted a reply to Newspaper sales - EXCEPT in the Critical Reasoning forum
“All the wrong answers will give us reason to doubt the conclusion that ppl from S are better informed about major world events than ppl from T. Note that the right answer doesn''t have to strengthen the conclusion; to be right that answer should simply not weaken the conclusion. The answer is E. ...”
March 12, 2014
Patrick_GMATFix posted a reply to Galileo and natural phenomena in the Sentence Correction forum
“Since we have a comparison, parallel structures should be maintained. Look for an answer as close as possible to "phenomena...would appear the same to someone on a ship...as to someone on land". Also beware of answers that use a single pronoun (it) to refer to a plural noun (phenomena) ...”
March 12, 2014
Patrick_GMATFix posted a reply to Ashanti military equipment in the Sentence Correction forum
“Since the underlined portion attempts to explainhow the shield were essential, a modifier beginning with -ing verb or with a noun should be used. The answer is C. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 12, 2014
Patrick_GMATFix posted a reply to what is the value of x^2 - y^2? in the Data Sufficiency forum
“Recognize the quadratic tested: x^2 - y^2 = (x-y)(x+y). Rephrase: what is (x-y)(x+y)?. Statement (1) is not sufficient (just plug in different values for x,y and test) but (2) is sufficient since multiplying both sides by (x+y) gives us the value we need. The answer is B. I go through the ...”
March 12, 2014
Patrick_GMATFix posted a reply to is y greater than 75? in the Data Sufficiency forum
“The prompt data allows us to write y > 1.1x, and therefore ask is 1.1x > 75? --> is x > 75/1.1 --> is x > 750/11? Rephrase: is x > 68 and 2/11 ? Statement (1) clearly answers the question, but what about (2)? The answer is A. I go through the question in detail in the ...”
March 12, 2014
Patrick_GMATFix posted a reply to Which n would raise average to 55? in the Problem Solving forum
“To bump the average up by 5 units, these 90 units will have to increase the total by 5n (5 extra unit for each previous day) + 55 (units for the new day). So we can write 90=5n+55, making n=7. We could also solve by working backwards, testing answer choices to see which value of n fits the ...”
March 12, 2014
Patrick_GMATFix posted a reply to Probability of selecting siblings in the Problem Solving forum
“There are 60/1,000 chances to pick a sibling from the junior class, then only 1/800 chances to pick the matching sibling from the senior class. The probability that both happen is (60/1000)(1/800) = 3/40,000. The answer is A. I go through the question in detail in the full solution below (taken ...”
March 12, 2014
Patrick_GMATFix posted a reply to Veritas -John held parties for his kids that featured clowns in the Sentence Correction forum
“It may not be necessary, but it''s helpful. That knowledge will be another tool in your belt; it won''t hurt to have it.”
March 11, 2014
Patrick_GMATFix posted a reply to Malaria parasite in red blood cells in the Critical Reasoning forum
“To weaken a conclusion, we don''t have to disprove it, but only to make it less convincing. The right answer should suggest a way that a person who has been in a malaria-free region for over 120 days can still get a malaria-induced fever. Note that the premise tells us that the parasite cannot go ...”
March 11, 2014
Patrick_GMATFix posted a reply to Insurance policies in the Critical Reasoning forum
“The right answer will provide a solution to the problem; it should provide a way to offer the elderly coverage while keeping premium payments low. The answer is A. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 11, 2014
Patrick_GMATFix posted a reply to Based on accounts of ancient writers in the Sentence Correction forum
“Modifiers that begin with an adjective or -ed form of the verb are noun modifiers. As a result, the underlined portion of the original sentence must modify "scholars. The problem with the original sentence is that the modification is not logical; it doesn''t make sense to claim that ...”
March 11, 2014
Patrick_GMATFix posted a reply to Female church ministers in the Sentence Correction forum
“"much" cannot be used to modify countable things (people). In addition, the comparison should be parallel, so avoid sentences that compare the 1986 number to the year 1977. The correct answer is D. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 11, 2014
Patrick_GMATFix posted a reply to Data Sufficiency - Probability in the Data Sufficiency forum
“You''ve made the mistake of mixing a ratio number with a real number. When (1) gives ratio of red:blue = 1:3, you cannot take that to mean that there are 1 red and 3 blue. there may be 10 and 30, or infinitely many other possibilities. When the statements are combined, we know that there are 2 ...”
March 11, 2014
Patrick_GMATFix posted a reply to Number properties - how do I even start? in the Data Sufficiency forum
“The only integers who cannot be expressed as the product of two integers greater than 1 are prime numbers. So this question is asking "is p non-prime?". Statement (1) is SUFFICIENT since all integers between 31 and 37 are non-primes. According to statement (2), p may be prime (3) or ...”
March 11, 2014
Patrick_GMATFix posted a reply to What is wz? in the Data Sufficiency forum
“(1) is NOT SUFFICIENT since (w,z)=(1,27) will result in a different value for wz than (10,18). (2) must be SUFFICIENT since only one set of consecutive odds can add up to 28 (changing a number will change the sum). The answer is B. I go through the question in detail in the full solution below ...”
March 11, 2014
Patrick_GMATFix posted a reply to y is what percent of x? in the Problem Solving forum
“One approach is to plug in easy values that agree with the data given: "x is m percent of y" --> "1 is 20 percent of 5". Then solve; "y is what percent of x" --> "5 is what percent of 1?" The answer is 500; find it in the answer choices by replacing m ...”
March 11, 2014
Patrick_GMATFix posted a reply to What is median - average? in the Problem Solving forum
“A string of numbers at constant intervals (such as consecutive multiples of 5) is called an arithmetic sequence. One property of such a sequence is that its average equals its median. So the difference between median and average is 0. The answer is B. I go through the question in detail in the ...”
March 11, 2014
Patrick_GMATFix posted a reply to Veritas -John held parties for his kids that featured clowns in the Sentence Correction forum
“Daniel, You misread my original post. At no time did I write that the relative pronoun (which/that) modifies an action. I said it modifies the noun before the comma or the noun phrase before the comma. What is "which" supposed to modify? Since "yesterday" is not the ...”
March 10, 2014
Patrick_GMATFix posted a reply to OG11 Q89.... Do help in the Critical Reasoning forum
“http://snag.gy/fQZUh.jpg The answer is A. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5680_thumb.png -Patrick”
March 10, 2014
Patrick_GMATFix posted a reply to Effective kinds of publicity in the Critical Reasoning forum
“This is an inference question (a Q that asks to find the answer that is supported by the passage or asks to draw a conclusion). The right answer to an inference question is one that can be proven (or most nearly proven) from the provided premises alone (there should be no need to introduce ...”
March 10, 2014
Patrick_GMATFix posted a reply to child care for low-income families in the Critical Reasoning forum
“The conclusion is quite extreme because it claims that all low-income families will be able to obtain additional child care. The right answer needs only to show that some such families (1+) will still be unable to get the additional child care. Maybe these are families that do not pay income tax ...”
March 10, 2014
Patrick_GMATFix posted a reply to Barbara Wootton's elephant in the Sentence Correction forum
“The best tense to use for "to earn" is the past progressive "was earning" as in "the elephant was earning what she then earned". Only A and D use this tense. D commits a parallelism error (the elephant giving rides and was earning). The answer is A. I go through ...”
March 10, 2014
Patrick_GMATFix posted a reply to Women scientists in the Sentence Correction forum
“The answer is E. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5163_thumb.png -Patrick”
March 10, 2014
Patrick_GMATFix posted a reply to Veritas -John held parties for his kids that featured clowns in the Sentence Correction forum
“Two things you should understand: 1) The relative clause can refer to the noun just before the comma, or to the noun phrase just before the comma. Both of the sentences below are correct: The children of the house, which was built in 2005, have just arrived. The children of the house, who ...”
March 10, 2014
Patrick_GMATFix posted a reply to If x = 0.rstu what is x? in the Data Sufficiency forum
“Statement(2) alone is clearly not sufficient since all digits could equal 1, or they could all equal 2..., so (2) is not sufficient. On the other hand, only one set of values is possible under statement (1) so it must be sufficient. The answer is A. I go through the question in detail in the full ...”
March 10, 2014
Patrick_GMATFix posted a reply to Is sqrt(n+k) > 2*sqrt(n)? in the Data Sufficiency forum
“This question tests your understanding that so long as you''re dealing with positive values, x>y means that x^2 > y^2. So we can square each side and rephrase the question as: is n+k > 4n? --> is n>3k? The answer is A. I go through the question in detail in the full solution below ...”
March 10, 2014
Patrick_GMATFix posted a reply to Grouping researchers in the Problem Solving forum
“Cool question. The answer is A. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5401_thumb.png -Patrick”
March 10, 2014
Patrick_GMATFix posted a reply to How many positive factors? in the Problem Solving forum
“The number of positive factors follows the formula below: if x = m^a * n^b * o^c... where m, n and o are the distinct prime factors of x, then x must have (a+1)(b+1)(c+1)... positive factors. The answer is D. I go through the question in detail in the full solution below (taken from the ...”
March 10, 2014
Patrick_GMATFix posted a reply to GMATPrep Q Bold face in the Critical Reasoning forum
“The answer is C. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/4919_thumb.png -Patrick”
March 8, 2014
Patrick_GMATFix posted a reply to Computer games and communication in the Critical Reasoning forum
“The answer is C. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5643_thumb.png -Patrick”
March 8, 2014
Patrick_GMATFix posted a reply to The Write Company in the Critical Reasoning forum
“the answer is E. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5632_thumb.png -Patrick”
March 8, 2014
Patrick_GMATFix posted a reply to Colorization of films in the Sentence Correction forum
“The right answer is E. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5148_thumb.png -Patrick”
March 8, 2014
Patrick_GMATFix posted a reply to Teratomas cancer in the Sentence Correction forum
“The answer is E. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5127_thumb.png -Patrick”
March 8, 2014
Patrick_GMATFix posted a reply to I don't understand the question, Yelp !!! in the Data Sufficiency forum
“Percentage difference is a function of the ratio a/b. For instance if that ratio is 1.5/1, then a would be 50% greater than b. Rephrase the Q: What is a/b? (1) 4a = 5b means that a/b = 5/4. SUFFICIENT (2) Knowing the absolute difference between values does not tell us the ratio. if b=1 ...”
March 8, 2014
Patrick_GMATFix posted a reply to total percent increase in sales in the Problem Solving forum
“Sri, the question says that last year 75% of the revenue came from car sales, but you plugged in only $25 for car sales. This may be the source of your error. -Patrick GMATFix”
March 8, 2014
Patrick_GMATFix posted a reply to What is the value of k? in the Data Sufficiency forum
“(1)is sufficient since k must be 51,000 (the only number between 6,000 and 500,000 that begins with 51 followed by 0s) (2) is sufficient because we know from the prompt that k is positive (so we can ignore the negative root). The answer is D. I go through the question in detail in the full ...”
March 7, 2014
Patrick_GMATFix posted a reply to Are all numbers equal? in the Data Sufficiency forum
“Statement 1 only tells us the average (60/15) but numbers could differ. Statement 2 on the other hand guarantees that all numbers are equal; if any two numbers were different, swapping one for the other from a group of 3 would change the sum of the 3. The answer is B. I go through the question ...”
March 7, 2014
Patrick_GMATFix posted a reply to Which cannot be true? in the Problem Solving forum
“Good question; a good understanding of the concepts of mean median and range can allow us to solve it without having to plug-in multiple times. Since we''re asked what cannot be true, we should do our best to think of scenarios that make each answer choice true. The answer is E. I go through the ...”
March 7, 2014
Patrick_GMATFix posted a reply to How many even divisors? in the Problem Solving forum
“Lula, Solution A In general, the number of positive factors can be calculated from the prime factorization. If x = m^a * n^b * p^c... where m,n and p are the distinct prime factors of x, then the number of factors of x is (a+1)*(b+1)*(c+1)... (the values of m,n,p... don''t matter). For ...”
March 7, 2014
Patrick_GMATFix posted a reply to According to a study by the Carnegie Foundation in the Sentence Correction forum
“When something is implied, it is absent on paper. For instance: "I have asked you to stop crying and . The 2nd "to" could be implied. We can imply something that was explicitly stated earlier in the sentence. In the example I just provided, it''s ok to imply "to" since it ...”
March 7, 2014
Patrick_GMATFix posted a reply to Predicting next year's inflation in the Critical Reasoning forum
“This conclusion about a general trend is based on only 2 data points. This is inherently dangerous. To weaken the conclusion, the right answer will likely show that if we take a wider perspective (more data points) the conclusion that inflation will rise next year won''t make sense. The answer is ...”
March 7, 2014
Patrick_GMATFix posted a reply to Robot satellites and space flights in the Critical Reasoning forum
“The right answer should weaken the argument, so it should give us reason to believe that maybe space flights carrying astronauts will not always be necessary. How could that be? Maybe astronauts will be able to repair satellites from the ground using remote controlled machines or maybe we can just ...”
March 7, 2014
Patrick_GMATFix posted a reply to 1988 corporate profits in the Sentence Correction forum
“Verb tense is tested (since 1988, profits have slipped/slipped) along with modifiers and concision (as/because/the reason being because). The answer is A. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 7, 2014
Patrick_GMATFix posted a reply to R&D expenditures in the Sentence Correction forum
“Simplify the sentence; at its core it says: "Because of the R&d required ____ in the industry,..., such firms tend to be large." The right answer must contain the antecedent (aka the referent) to which "such firms" refers. Only one answer does. The answer is B. I go ...”
March 7, 2014
Patrick_GMATFix posted a reply to what is the sum of angles x and y? in the Data Sufficiency forum
“Remember that a 4-sided polygon must have (4-2)*180 = 360 degrees total. To find x+y, it would be sufficient to find the sum of interior angles opposite x and y, inside the 4-sided polygon. The answer is C. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 6, 2014
Patrick_GMATFix posted a reply to Survey results in the Data Sufficiency forum
“Great question. The table isn''t helpful by itself, but if we think of each column as a a system of two overlapping groups, we can solve by using Venn diagrams, the groups formula (total = group1 +group2 + neither - both) or the groups table (aka matrix). The answer is A. I go through the ...”
March 6, 2014
Patrick_GMATFix posted a reply to How many green marbles in R? in the Problem Solving forum
“Good question. Each row corresponds to a linear equation. Write them out and isolate what you''re looking for. The answer is D. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5392_thumb.png -Patrick”
March 6, 2014
Patrick_GMATFix posted a reply to How to quickly find sum of integers? in the Problem Solving forum
“A string of numbers with constant intervals (eg. evens, or multiples of 7) is an arithmetic sequence. The sum of such a sequence is easily found by multiplying its average (the median) to the number of values. The answer is D. I go through the question in detail in the full solution below (taken ...”
March 6, 2014
Patrick_GMATFix posted a reply to Robots replacing workers in the Critical Reasoning forum
“To strengthen an argument, the answer needs to make it more convincing. So the right answer will give us reason to believe that companies will eventually pay for these layoffs either through taxes or through unemployment insurance payments. The answer is A. I go through the question in detail in ...”
March 6, 2014
Patrick_GMATFix posted a reply to Lower incidence of intestinal disease in the Critical Reasoning forum
“We are looking for the answer that weakens the argument that cleaner water has reduced the incidence of disease. The only evidence presented is a decrease in the number of people diagnosed, so we have to ask ourselves 2 questions: (1) do the number diagnosed actually reflect the number sick? (2) ...”
March 6, 2014
Patrick_GMATFix posted a reply to Barbara McClintock in the Sentence Correction forum
“Subject-verb agreement is tested (all of the info is/are contained) along with precise meaning (the 1000s of genes/1000s of the genes). The answer is E. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5095_thumb.png ...”
March 6, 2014
Patrick_GMATFix posted a reply to Prime lending rate in the Sentence Correction forum
“The "not only X but also Y" idiom is among the most popular. In the correct sentence, X and Y must be parallel. The answer is B. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5085_thumb.png -Patrick”
March 6, 2014
Patrick_GMATFix posted a reply to Not getting how to solve this one. in the Problem Solving forum
“(my initial solution had a mistake so I rewrote it) The shortest distance from a corner to the surface of the sphere will be the line that goes straight towards the center of the sphere. This line segment is aligned with the diagonal of the cube (distance between two opposite vertices - see ...”
March 4, 2014
Patrick_GMATFix posted a reply to Was average greater than 90? in the Data Sufficiency forum
“In general when a DS Q asks about average, you should think in terms of total. We want to know whether the sum of all registrations is greater than 90*6 = 540. The answer is A. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 4, 2014
Patrick_GMATFix posted a reply to What is the median? in the Data Sufficiency forum
“The statements together are so obviously sufficient (with 2 prices we can find the 3rd since we know the average) that we should be careful about moving too quickly to merging the statements. This is a common GMAT trick: make the combination of statements obviously sufficient and hope that the test ...”
March 4, 2014
Patrick_GMATFix posted a reply to if r is halved V is multiplied by in the Problem Solving forum
“I might plug in values (r=1 --> 1/2 for instance), or just replace r with r/2 and compare the original V to the new V. The answer is B. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5389_thumb.png -Patrick”
March 4, 2014
Patrick_GMATFix posted a reply to Sum of consecutive integers - which must be true? in the Problem Solving forum
“This type of question doesn''t require any calculation. The only way for consecutive integers to add up to 0 is for the middle integer to be 0 (so there are an odd number of values), with all the others evenly distributed on either side (so average=0). The answer is E. I go through the question in ...”
March 4, 2014
Patrick_GMATFix posted a reply to tough word problem in the Data Sufficiency forum
“When the values of two groups are averaged, the result is a weighted average; it''s called weighted average because instead of being exactly in the middle of the two groups, it is closer to the value of the larger group; there is a proportional relationship to the sizes of the groups: if group 1 is ...”
March 4, 2014
Patrick_GMATFix posted a reply to absolute value in the Data Sufficiency forum
“It''s incorrect to claim that if x>0, then |4-x| is the same as (4-x). For instance, if x were 5, those two expressions would not have the same value. Likewise, it''s incorrect to claim that if x<0, then |4-x| is the same as -(4-x). For instance, if x were -1, then |4-x| would be 5, but ...”
March 4, 2014
Patrick_GMATFix posted a reply to Help with "Describe the role" questions. in the Critical Reasoning forum
“Prada. My (admittedly biased) recommendation is that you used the GMATFix App tool to really target areas that give you trouble. Doing several similar questions in sequence and then reviewing your work can help you build good working habits for that particular topic, and the App has in depth videos ...”
March 4, 2014
Patrick_GMATFix posted a reply to Swartkans use of fire in the Critical Reasoning forum
“This is a pretty tough question. To solve it, remember that in order to strengthen an argument the right answer does NOT have to prove that it is correct, but only needs to make the argument more convincing. In this case, the right answer should give us additional reason to believe that the charred ...”
March 4, 2014
Patrick_GMATFix posted a reply to Life expectancy in the Critical Reasoning forum
“The right answer should give us reason to believe that even though avg age at death was 40, people were not necessarily considered old at that age. This could happen if a lot of people died "before their time". You can imagine a society in which when you reach the prime of life, you have ...”
March 4, 2014
Patrick_GMATFix posted a reply to In 1791 Robert Carter in the Sentence Correction forum
“This tests modifiers; the underlined portion must accurately modify the main clause by describing the effect of the main clause. The idiom "consider X" is also tested. The answer is A. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 4, 2014
Patrick_GMATFix posted a reply to Transplants in the Sentence Correction forum
“In comparison, only like-terms should be compared. We cannot compare transplants to patients! The answer is C. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5060_thumb.png -Patrick”
March 4, 2014
Patrick_GMATFix posted a reply to absolute value in the Data Sufficiency forum
“An alternative approach: rephrase the question by thinking of absolute values as measures of distance. ✔ Absolute value of |a-b| is the distance between a and b on the number line. for instance |5-8| = |8-5| = distance between 5 and 8 on the number line. ✔ Absolute value of |a+b| ...”
March 3, 2014
Patrick_GMATFix posted a reply to GCF of x and y in the Data Sufficiency forum
“To solve this quickly, we must realize that the greatest common factor of two consecutive integers must be 1. The reason is simple: if X and Y have a common factor k, then they can be expressed as k*a and k*b, and the difference X-Y = k(a-b). Notice that this difference, k(a-b), is a multiple of k. ...”
March 3, 2014
Patrick_GMATFix posted a reply to What is the value of r? Sudoku! in the Data Sufficiency forum
“Good question! The answer is D. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/6182_thumb.png -Patrick”
March 3, 2014
Patrick_GMATFix posted a reply to What is the slope of k? in the Data Sufficiency forum
“3 things are useful to know: 1) In the equation y=mx+b, m represents the slope. 2) Two parallel lines have the same slope. 3) The point at which two lines intersect, you can set the equations equal to each other. The answer is A. I go through the question in detail in the full solution below ...”
March 3, 2014
Patrick_GMATFix posted a reply to How many routes from X to Y in the Problem Solving forum
“To go from X to Y, we need to go right twice (2 R''s) and up three times (3 U''s). Think of this question as how many ways you can order RRUUU. The answer is C. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 3, 2014
Patrick_GMATFix posted a reply to This takes too long!!! Shortcuts? in the Problem Solving forum
“You''re right, you''re not supposed to actually calculate through brute force! This is a test of the common quadratic x^2 - y^2 = (x-y)(x+y). The answer is A. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 3, 2014
Patrick_GMATFix posted a reply to Sinusitis incidence rates in the Critical Reasoning forum
“The answer is C. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/4888_thumb.png -Patrick”
March 3, 2014
Patrick_GMATFix posted a reply to Women in college in the Critical Reasoning forum
“The answer is D. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/4869_thumb.png -Patrick”
March 3, 2014
Patrick_GMATFix posted a reply to Compounding effects of drugs in the Sentence Correction forum
“The answer is B. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5038_thumb.png -Patrick”
March 3, 2014
Patrick_GMATFix posted a reply to Light baggage in the Sentence Correction forum
“The answer is E. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5033_thumb.png -Patrick”
March 3, 2014
Patrick_GMATFix posted a reply to Do t and 12 have common factors? in the Data Sufficiency forum
“Since we''re asked about t, it makes sense to isolate it in the equation. It''s also generally the case that fractions tend to hide information while flatter equations are easier to grasp. For both those reasons, my first step would be to get rid of the denominators in the equation. The answer is ...”
March 2, 2014
Patrick_GMATFix posted a reply to Which club has more members? in the Data Sufficiency forum
“Alone the statements cannot be sufficient since each gives us info about the people who are members of both groups, not allowing us to compare total group sizes. together the statements get interesting since they give us info about the same subgroup, but expressed in different ways. The answer ...”
March 2, 2014
Patrick_GMATFix posted a reply to Oil drum and capacity in the Problem Solving forum
“Plugging in values for the capacities makes sense; good values would be common multiples of the denominators in the question and answers. For instance we could make Capacity_X=12 and Capacity_Y=24 and go from there. The answer is C. I go through the question in detail in the full solution below ...”
March 2, 2014
Patrick_GMATFix posted a reply to vacuum pump in the Problem Solving forum
“The quickest approach is probably to pick a number to represent the amount of starting air. It should be a power of 2 since 1/2 the amount is removed after every stroke. For instance, if starting amount is 16, we can figure out that after four strokes we''ll have just 1 left, so 15/16 was removed. ...”
March 2, 2014
Patrick_GMATFix posted a reply to Formulas for cash flow in the Sentence Correction forum
“Hey Parveen, "as to" can be used in comparisons as part of the construction "same to X as to Y". Here the idiom is really "same as". Correct: "Formulas apply the same way to X as -Patrick”
March 2, 2014
Patrick_GMATFix posted a reply to Nursing home occupancy in the Critical Reasoning forum
“A question that asks which conclusion can be drawn, which answer choice is best supported, or which answer must be true is an INFERENCE question. To solve this question, pick the answer choice that must be true. The answer is A. I go through the question in detail in the full solution below (taken ...”
March 2, 2014
Patrick_GMATFix posted a reply to Corporate fitness programs in the Critical Reasoning forum
“We''re looking to weaken, so the right answer will give us reason to believe that fitness programs may not decrease absenteeism (workers missing work). Avoid answers that have to do with what happens outside of work hours or that don''t have to do with workers actually missing work. The answer is ...”
March 2, 2014
Patrick_GMATFix posted a reply to Greek vegetarian diet in the Sentence Correction forum
“sine the underlined portion starts with "and", that part of the sentence must be the end of a list. The trick to solving this question is understanding where the list begins. The answer is E. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 2, 2014
Patrick_GMATFix posted a reply to Investment officers fees in the Sentence Correction forum
“Verb tense is tested ("Since 1986...corporations began/have begun") along with pronoun agreement (they should refer to officers, not officers'' fees) and other minor rules. The answer is D. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 2, 2014
Patrick_GMATFix posted a reply to My Thank You to BTG: GMATFix License Give-Away in the GMAT Strategy forum
“No problem; Please try restarting the App, then clicking the LICENSE button on the startup screen. Let me know what happens. -Patrick”
March 2, 2014
Patrick_GMATFix posted a reply to My Thank You to BTG: GMATFix License Give-Away in the GMAT Strategy forum
“Hi Ankit. Yes you''re eligible; have you successfully signed in from within the App? (select "Account" >> "Login/Register" from the startup screen) -Patrick”
March 1, 2014
Patrick_GMATFix posted a reply to Is xy a multiple of 105? in the Data Sufficiency forum
“When a question asks about factors, multiples or primes, it is usually a good idea to break your numbers into their prime factors. The answer is B. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/6165_thumb.png ...”
March 1, 2014
Patrick_GMATFix posted a reply to Which is cheaper? in the Data Sufficiency forum
“Total cost is Price + Price*Tax, so we''re asked to compare (p1)+(p1t1) to (p2)+(p2t2). The statements compare the tax rate (1) and the tax amounts (2) so they cannot be sufficient alone. What about together? I go through the question in detail in the full solution below (taken from the GMATFix ...”
March 1, 2014
Patrick_GMATFix posted a reply to Greatest straight distance between points in the Problem Solving forum
“There is a straightforward formula for this: length^2 + width^2 + height^2 = diagonal^2 where diagonal is the longest straight line between two points in a box/cube. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
March 1, 2014
Patrick_GMATFix posted a reply to Job applicants and heart attacks in the Critical Reasoning forum
“Be exact when making predictions. Here the right answer will give us a reason that the law will not be effectively enforced (not a reason that the law is bad). So the right answer will show that it is not possible to figure out which applicants have a 90% chance of heart attacks and which don''t. I ...”
February 28, 2014
Patrick_GMATFix posted a reply to Property tax reassessments in the Critical Reasoning forum
“Reassessments don''t occur as much as they should (when values change at differential rates), but mostly when their effect is an increased tax. So a situation in which a reassessment should occur but is unlikely to occur must be a general decrease in property values amid differential rates changes. ...”
February 28, 2014
Patrick_GMATFix posted a reply to Microcomputer for every pupil. Comparison in the Sentence Correction forum
“Comparisons can be tricky; we must ensure that logical things are compared, and ideally that they are compared in parallel ways. Subject-verb agreement ("there is one" vs "there are one") as well as idioms ("as may as" vs "as many than") are also tested. I go ...”
February 28, 2014
Patrick_GMATFix posted a reply to Horace Pippin's hand in the Sentence Correction forum
“The sentence tests the proper way to modify Pippin. The modifier needs to refer to him, and make logical sense given what the author is trying to convey. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5005_thumb.png ...”
February 28, 2014
Patrick_GMATFix posted a reply to Salesman pay and commission in the Data Sufficiency forum
“The 2nd statement is clearly sufficient, and the first allows us to write an equation in which "Sales" is the only variable, so it will also be sufficient. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
February 27, 2014
Patrick_GMATFix posted a reply to Which is closest to zero? in the Data Sufficiency forum
“In short, the 1st statement guarantees that 0 is half-way between q and s, so r must be the closest to 0. I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/6152_thumb.png -Patrick”
February 27, 2014
Patrick_GMATFix posted a reply to Coin probability in the Problem Solving forum
“Because it must always be the case that either something happens at least once or it never happens, Prob(at least 1) + Prob(never) = 1. In general, Prob(at least one) can be solved easily by finding 1 - Prob(never). In this case, 1-Prob(no tails). I go through the question in detail in the full ...”
February 27, 2014
Patrick_GMATFix posted a reply to Managers to Workers - Ratios in the Problem Solving forum
“The easiest way to deal with ratios algebraically is to express all values within the same ratio in terms of the same variable. For instance, a ratio of 5 to 72 means that there are 5x managers and 72x production workers. An alternative approach would be to work backwards and figure out which ...”
February 27, 2014
Patrick_GMATFix posted a reply to Spending on Reasearch & Development in the Critical Reasoning forum
“I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/4818_thumb.png -Patrick”
February 27, 2014
Patrick_GMATFix posted a reply to Smokers and their offices in the Critical Reasoning forum
“I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/4806_thumb.png -Patrick”
February 27, 2014
Patrick_GMATFix posted a reply to Congress bill about unpaid leave in the Sentence Correction forum
“I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/4986_thumb.png -Patrick”
February 27, 2014
Patrick_GMATFix posted a reply to Mortgage payments in the Sentence Correction forum
“I go through the question in detail in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/5000_thumb.png -Patrick”
February 27, 2014
Patrick_GMATFix posted a reply to Graduates' loans and scholarships in the Data Sufficiency forum
“Use a groups table (matrix) or Venn diagram to keep your work organized, and be careful not to let info from one statement affect how you assess the other statement. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
February 26, 2014
Patrick_GMATFix posted a reply to Exponents and factors in the Data Sufficiency forum
“(1) by itself tells us nothing about t, while (2) alone does not restrict what n could be so it can''t be sufficient. Together the statements are a lot more interesting. I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
February 26, 2014
Patrick_GMATFix posted a reply to Livesaving test - Overlapping Groups in the Problem Solving forum
“You can use Venn diagrams, the groups formula (group 1 + group 2 + neither - both = total), or the groups table (sometimes called a matrix) to solve overlapping sets. In many cases, you can even work back from the answer choice (this technique is called reverse engineering, back solving or ...”
February 26, 2014
Patrick_GMATFix posted a reply to Job applicants - overlapping groups in the Problem Solving forum
“Overlapping sets can be solved in several ways; you could use Venn diagrams, the groups formula (total = group 1 + group 2 + neither - both), or use the groups table (also called a matrix). I go through the question in detail in the full solution below (taken from the GMATFix App). ...”
February 26, 2014
Patrick_GMATFix posted a reply to How children choose punishments in the Critical Reasoning forum
“Notice that in order to argue that younger children don''t regard intention as relevant, the author must assume that the young children have the ability to discern intention in the first place. If these kids are not mature enough to discern intentions, we cannot argue that they regard intention as ...”
February 26, 2014
Patrick_GMATFix posted a reply to American steel mills in the Critical Reasoning forum
“The right answer should provide evidence against the argument that mini-mills will take more business from the big American mills than foreign mills would have taken in the absence of a quota. In other words, the answer should lead us to think that without the quota, the foreign mills would be a ...”
February 26, 2014
Patrick_GMATFix posted a reply to Metalwork adhesive bonding in the Sentence Correction forum
“I go through each answer choice in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/4959_thumb.png -Patrick”
February 26, 2014
Patrick_GMATFix posted a reply to Tax incentives in the Sentence Correction forum
“I go over each answer in the full solution below (taken from the GMATFix App). http://www.gmatfix.com/video_snap/4939_thumb.png -Patrick”
February 26, 2014
Patrick_GMATFix posted a reply to Teacher to Student ratio in the Data Sufficiency forum
“To get sufficiency, we need the ratio of total student & teacher populations from one district to the next. For instance if we learn that District M has 10 times the population of district P, we''ll know that M has 10 times as many students and 10 times as many teachers. The full solution ...”
February 25, 2014
Patrick_GMATFix posted a reply to Guy's income increase percentage in the Data Sufficiency forum
“You can answer this really quickly if you remember one thing: if two values change by different percentages, how much their sum (or difference) changes depends on the ratio of values. For instance, if almost all the sum comes from Value 1, then that value''s percentage change will impact the overall ...”
February 25, 2014
Patrick_GMATFix posted a reply to What is w + z? - Number Properties in the Problem Solving forum
“Questions about factors & multiples are usually best handled by breaking numbers into their prime factors, since these primes are the building blocks of all integers. The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5346_thumb.png -Patrick”
February 25, 2014
Patrick_GMATFix posted a reply to Jack and Bill's ages in the Problem Solving forum
“The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5340_thumb.png -Patrick”
February 25, 2014
Patrick_GMATFix posted a reply to Affirmative Action in the Critical Reasoning forum
“We want to strengthen the conclusion that Affirmative Action is good for business. The right answer needs to make the argument more convincing by supplying new supporting data or by validating the assumptions made. Since the argument makes its claim without offering any concrete data, a good answer ...”
February 25, 2014
Patrick_GMATFix posted a reply to TV Advertising in the Critical Reasoning forum
“We want to explain Fact 1: why are viewers forgetting a greater proportion of brand names in ads? Fact 2 starts off the explanation by pointing out that people don''t remember the ads in the middle of a string of ads. The answer choice will complete the explanation; what comes immediately to mind is ...”
February 25, 2014
Patrick_GMATFix posted a reply to Protein in wheat and rice in the Sentence Correction forum
“The sentence tests modifiers among other things; it begins with a description of rice (what has more protein than wheat?), so "rice" should start the underlined portion. I go over each answer choice in detail in the full solution below (taken from the GMATFix App). ...”
February 25, 2014
Patrick_GMATFix posted a reply to Formulas for cash flow in the Sentence Correction forum
“It''s a comparison question; the ways formulas are applied in the two scenarios should be stated in parallel. We should also avoid awkward, passive phrasing if we can (eg: subject to the applicability of formulas is much worse than formulas apply) I look at each answer in detail in the full ...”
February 25, 2014
Patrick_GMATFix posted a reply to How many solutions? in the Data Sufficiency forum
“Since A_n = r*n, we can think of the question as "for how many n''s is r*n < 100?" The answer must depend on r. The bigger r is, the fewer r*n will equal less than 100. Rephrase: "What is r?" The full solution below is taken from the GMATFix App. ...”
February 24, 2014
Patrick_GMATFix posted a reply to Oil tank capacity in the Data Sufficiency forum
“Note that there are only two unknown values: the capacity and the starting volume of oil in the tank (we know that ending volume is 200 less than starting volume). The prompt info gives us a simple relationship between these variables (a two-variable linear equation). Any data that gives us a ...”
February 24, 2014
Patrick_GMATFix posted a reply to Flower bed area in the Problem Solving forum
“When in doubt about a geometry question, draw and label the figure, identify what you''re asked for, write out the relevant formulas and insert all the known values. Taking these steps will generally make obvious what you can solve for. The full solution below is taken from the GMATFix App. ...”
February 24, 2014
Patrick_GMATFix posted a reply to Lori and Jim dollars in the Problem Solving forum
“There are a few ways to solve: You could plug-in simple numbers (eg: Lori has x=2 more, and together they have y=5), solve and select the answer choice that matches your solution You could use word translations to build equations that reflect the info given. In this case, use as few variables as ...”
February 24, 2014
Patrick_GMATFix posted a reply to Number of hours in n days? in the Problem Solving forum
“Sri one does not exclude the other. The # of hours is a multiple of 24, so it must be divisible by 24 and all of the factors of 24. The number of hours must be divisible by 2, 3, as well as 4 (and all other factors of 24) Checking divisibility by 2 would not help us eliminate any answer choice ...”
February 23, 2014
Patrick_GMATFix posted a reply to Combination Question in the Problem Solving forum
“Don''t mention it :)”
February 23, 2014
Patrick_GMATFix posted a reply to Number of tiles needed? in the Problem Solving forum
“My approach: We know that each design uses 3 "L" tiles. If we can figure out how many designs it will take to cover the whole floor, we can multiply that by 3 to find the number of "L" tiles needed. The only thing to be careful about is that we use consistent units. The ...”
February 23, 2014
Patrick_GMATFix posted a reply to Integers in list A that are not in B in the Problem Solving forum
“My Approach: "How many integers between 1 and 100 inclusive are in list A (evens) are not in list B (are not multiples of 3)" There are 50 evens in the list (2*1 to 2*50). Only 1 in 3 evens is a multiple of 3 (2, 4, 6, 8, 10, 12...), so about 2/3 of the 50 evens are not multiples of ...”
February 23, 2014
Patrick_GMATFix posted a reply to Count Questions in the Problem Solving forum
“Think of each handshake as a selection of 2 people from the 10 people in the room. If we assume that everyone shook hands with every one else, the number of handshakes corresponds to the number of ways to pick 2 from 10. The combination formula applies since order doesn''t matter (John shaking ...”
February 23, 2014
Patrick_GMATFix posted a reply to Number of small containers filled? in the Problem Solving forum
“http://snag.gy/fVIzA.jpg Hope that helped Sri, -Patrick”
February 23, 2014
Patrick_GMATFix posted a reply to Flawed Argument Untrue-Valid Argument. in the Critical Reasoning forum
“Hey Daniel, I''m glad my posts help. Without working with you through the material to see what your weaknesses and learning abilities are, any specific feedback would only be speculative. Different people have different needs for time it takes to prepare and optimal ability once they are done ...”
February 22, 2014
Patrick_GMATFix posted a reply to Combination Question in the Problem Solving forum
“Your logic is right. # of dinners with at least one vegetarian dish = Total - # with no vegetarian dish. Your mistake is that you used the permutation rather than combination formula. Since there no distinction is made once the 3 items are selected, the order in which they are selected is ...”
February 22, 2014
Patrick_GMATFix posted a reply to Agricultural Societies staple foods in the Critical Reasoning forum
“The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8549_thumb.png -Patrick”
February 22, 2014
Patrick_GMATFix posted a reply to Printwell's Ink Jet in the Critical Reasoning forum
“The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8548_thumb.png -Patrick”
February 22, 2014
Patrick_GMATFix posted a reply to Industrial Robots in the Sentence Correction forum
“The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8482_thumb.png -Patrick”
February 22, 2014
Patrick_GMATFix posted a reply to Sun and Moon in the Sentence Correction forum
“The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8481_thumb.png -Patrick”
February 22, 2014
Patrick_GMATFix posted a reply to Project SETI in the Sentence Correction forum
“That is correct; If the phrase that begins the sentence is describing a thing, that thing should follow the comma. For example: "Working in Visual Basic, Linda wrote her first computer program." A rare exception would be the use of another phrase to modify the last term in the ...”
February 21, 2014
Patrick_GMATFix posted a reply to Flawed Argument Untrue-Valid Argument. in the Critical Reasoning forum
“Depends on the question. If you''re asked what would weaken the argument, then yes the right answer would challenge the conclusion by either introducing a premise that disagree with the author''s conclusion or by challenging the author''s assumptions. I don''t know; I don''t look for such ...”
February 21, 2014
Patrick_GMATFix posted a reply to Flawed Argument Untrue-Valid Argument. in the Critical Reasoning forum
“Daniel, The argument you attached contains two opinions; the teachers'' and the author''s. The last sentence is the author''s conclusion. All arguments (except some Resolve the Paradox and all Inference/Draw a Conclusion) contain a conclusion. Not all arguments contain a reasoning premise. For ...”
February 21, 2014
Patrick_GMATFix posted a reply to algebra DS in the Data Sufficiency forum
“There is a problem with this question though. The two statements contradict the prompt data. (2) tells us that u = 4 or -4 (1) tells us that uv = 3, which would make v =3/4 or -3/4 So the statements together tell us that (u,v) = (4,3/4) or (-4, -3/4). OK fine. Problem is that the prompt says ...”
February 21, 2014
Patrick_GMATFix posted a reply to algebra DS in the Data Sufficiency forum
“The 2nd statement is straightforward. We know that x=v^2-u^2=11; since u^2=16, v^2=27. We have u^2 and v^2, so we can find Z=u^2+v^2. SUFF. The first statement is trickier, but I also find Sufficiency. Below is my work: http://snag.gy/GqD66.jpg”
February 21, 2014
Patrick_GMATFix posted a reply to Dessert and coffee in the Problem Solving forum
“Great question Safina. It can be solved in several ways; below are two of them. Solve with Venn Diagram http://snag.gy/VLIsL.jpg Groups Table http://snag.gy/N25jH.jpg Hope that helps, -Patrick”
February 21, 2014
Patrick_GMATFix posted a reply to Carmen's weekly pay in the Data Sufficiency forum
“weekly pay = wage * hours. If we knew Carmen''s initial wage, we would know the new wage, and we would know how to adjust hours to keep wage * hours constant. Rephrase to: "What is Carmen''s wage"?. Each statement gives us a way to find this wage. The full solution below is taken from ...”
February 21, 2014
Patrick_GMATFix posted a reply to is x-y odd? in the Data Sufficiency forum
“Questions about even/odds can often be solved quickly by just logically thinking through the properties of numbers. The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5585_thumb.png -Patrick”
February 21, 2014
Patrick_GMATFix posted a reply to Observation point - Geometry in the Problem Solving forum
“As with most geometry questions, this one can be solved more easily if you take the time to draw and label a figure on your scrap paper. The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5334_thumb.png -Patrick”
February 21, 2014
Patrick_GMATFix posted a reply to Area of ship rudder in the Problem Solving forum
“Be familiar with the common right triangles 3-4-5 and 5-12-13 (tested here) because they come up over and over on the test. Area of a trapezoid can be found in at least two ways: 1 - average of parallel sides * perpendicular side 2 - break trapezoid into a triangle sitting on top of a rectangle ...”
February 21, 2014
Patrick_GMATFix posted a reply to Parents supervise - overlapping sets in the Problem Solving forum
“Overlapping sets can usually be solved quickly by arranging data in a table, drawing Venn diagrams or using the overlapping groups formula. The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8412_thumb.png -Patrick”
February 21, 2014
Patrick_GMATFix posted a reply to Belukia lobsters in the Critical Reasoning forum
“Remember that an assumption must be true for the conclusion to follow from the premises. The full solution below is taken from the GMATFix App; I go through each answer choice in detail. http://www.gmatfix.com/video_snap/8547_thumb.png -Patrick”
February 21, 2014
Patrick_GMATFix posted a reply to Drindian Empire population in the Critical Reasoning forum
“To solve bold statement questions, I use a "classify-then-predict" strategy. I demonstrate the strategy in the full solution below, which is taken from the GMATFix App. https://www.gmatfix.com/video_snap/8546_thumb.png -Patrick”
February 21, 2014
Patrick_GMATFix posted a reply to Converting harvested trees in the Sentence Correction forum
“The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8480_thumb.png -Patrick”
February 21, 2014
Patrick_GMATFix posted a reply to North Pacific temperatures in the Sentence Correction forum
“The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8479_thumb.png -Patrick”
February 21, 2014
Patrick_GMATFix posted a reply to Flawed Argument Untrue-Valid Argument. in the Critical Reasoning forum
“Not everyone prefers small cities; large cities have their own advantages (more employers, more opportunities for employment and fun activities, closer to major airports, etc...). The argument is flawed because it makes a big assumption about smaller cities. Anyway, we still don''t know what the ...”
February 20, 2014
Patrick_GMATFix posted a reply to Flawed Argument Untrue-Valid Argument. in the Critical Reasoning forum
“Hey Daniel, A flawed argument is one that makes significant assumptions. The more numerous and the more farfetched the assumptions, the more flawed the argument. Another way to look at it: An argument is flawed if its premises alone are not sufficient to prove its conclusion. The argument is ...”
February 20, 2014
Patrick_GMATFix posted a reply to Greatest number of diagonals in the Problem Solving forum
“Brent, that''s really elegant. I''m jealous not to have thought of it.”
February 20, 2014
Patrick_GMATFix posted a reply to senctence correction Gmat in the Sentence Correction forum
“I may be wrong here, but I don''t think any of the answer choices is good enough to be a GMAT answer. What is the source of the question please? -Patrick”
February 20, 2014
Patrick_GMATFix posted a reply to is (1/10)^n < 0.01? in the Data Sufficiency forum
“This sentence tests your understanding of how powers of positive fractions work. Remember that within positive fractions, increasing the power decreases the value. The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5580_thumb.png -Patrick”
February 20, 2014
Patrick_GMATFix posted a reply to is 9^x + 9^-x = b? in the Data Sufficiency forum
“To compare equations or integrate data from different equations, make them look as similar to each other as possible. This is particularly helpful in DS. In this case, to evaluate (1), we should isolate variable b since b is isolated in the original question. The full solution below is taken from ...”
February 20, 2014
Patrick_GMATFix posted a reply to Infinite decimal loops in the Problem Solving forum
“In general when a DS question gives you an expression you can factor, you should factor it. Conversely when a DS question gives you an expression you can expand (as is the case here), you should expand it. This should make sense; the GMAT will not give you expressions in the form that would make ...”
February 20, 2014
Patrick_GMATFix posted a reply to Mouse pellets in the Problem Solving forum
“Moving from X to Y is equivalent to going through a series of decision points. Every time we have two options, the number of paths will double. Every time we have three options, the number of paths will triple... The full solution below is taken from the GMATFix App. ...”
February 20, 2014
Patrick_GMATFix posted a reply to Highway project cancellation in the Critical Reasoning forum
“Hi Olga, The argument is not limited to the budget. The conclusion is about what motivated the President''s decision; was it sound budgetary policy? or was it vindictive punishment? The conclusion uses the "all cancelled projects were wasteful" line to claim that the motivation was ...”
February 20, 2014
Patrick_GMATFix posted a reply to Problem Solving on Set Theory in the Problem Solving forum
“This is a great question; the full solution below is taken from the GMATFix App (QID 8412). https://www.gmatfix.com/video_snap/8412_thumb.png -Patrick”
February 20, 2014
Patrick_GMATFix posted a reply to To find y in the graph in the Problem Solving forum
“If we have the equation of the line, we''ll be able to find y given the value of x for any point on the line. Equation of the line is y = mx + b where m is the slope and b is the y-intercept. We already know that the y-intercept (where the line crosses the y-axis) is 0. the two known points ...”
February 20, 2014
Patrick_GMATFix posted a reply to Greatest number of diagonals in the Problem Solving forum
“A diagonal goes from one vertex to any other vertex except itself and the two vertices adjacent to it. As a result, the max number of diagonals that can be drawn from any vertex in a polygon with x sides (x vertices) is x-3. This question is about a 6-sided polygon, so the answer is 6-3 = 3. ...”
February 20, 2014
Patrick_GMATFix posted a reply to Bold Statement: preserve wilderness area in the Critical Reasoning forum
“I used a "classify-and-predict" strategy to solve Bold Statement questions quickly. The strategy is demonstrated in the full solution below, which is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8545_thumb.png -Patrick”
February 20, 2014
Patrick_GMATFix posted a reply to Highway project cancellation in the Critical Reasoning forum
“An assumption must be true for the conclusion to logically follow from the premises Premise: 90% of cancelled projects were in opposition districts, but all cancelled projects had been identified as wasteful. Conclusion: the cancellation was not motivated by a vindictiveness, but by sound ...”
February 20, 2014
Patrick_GMATFix posted a reply to Extremophiles in the Sentence Correction forum
“This sentence tests parallel structures. The 2 facts about the microbes must be parallel: "Places...tend to be populated by microbes that seem to flourish and that are called extremophiles" The full solution below is taken from the GMATFix App. ...”
February 20, 2014
Patrick_GMATFix posted a reply to Mariner IV in the Sentence Correction forum
“Modifiers are tested along with parallel structures in comparisons. There are 4 broad ways that modifiers are introduced on the GMAT: (1) by a relative pronoun (which, who, when...), (2) by an adjective or past participle (-ed form of verb), (3) by a present participle (-ing form of verb), or (4) by ...”
February 20, 2014
Patrick_GMATFix posted a reply to Does k have more different prime factors than j? in the Data Sufficiency forum
“Sri, As you evaluate (1), both your plug-ins give k more prime factors than j, but when you plug in, do your best to get conflicting answers. In other words, come up with a plug-in that gives j more prime factors (ex: j=2*3*5). Likewise when you evaluate (2), you only used example that give k ...”
February 19, 2014
Patrick_GMATFix posted a reply to What is the value of a^4 - b^4? in the Data Sufficiency forum
“when the GMAT gives you an expression that can be factored, especially in DS, you should factor it. a^4-b^4 = (a^2-b^2)(a^2+b^2) according to the quadratic identity x^2-y^2 = (x-y)(x+y) The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5573_thumb.png ...”
February 19, 2014
Patrick_GMATFix posted a reply to Circomference of circle O in the Data Sufficiency forum
“To find the circumference of a circle we need its radius. (1) allows us to find the radius since we know that the triangle''s legs will follow the ratio of a 45-45-90 (isosceles right triangle). (2) allows us to find the circumference directly because the arc in question is exactly a quarter of the ...”
February 19, 2014
Patrick_GMATFix posted a reply to A factory has 500 workers in the Problem Solving forum
“We could take an algebraic approach, try out numbers from the answer choices, or just think through logically. Logically: there will be 550 workers. We''ll want 20% of them (or 110) to be women. There are currently 15%*500 = 75 women. The additional number of women must therefore be 110-75 = 35. ...”
February 19, 2014
Patrick_GMATFix posted a reply to Absolute value & the number line in the Problem Solving forum
“One approach: plug in the two boundaries from the graph (-5 and 3) into each answer choice. In the wrong answers, at least one of the numbers will result in an invalid statement. In the right answer, both of these numbers will result in a valid equality. For instance plugging -5 and 3 into ...”
February 19, 2014
Patrick_GMATFix posted a reply to GMAT PREP EXAM 1 PS QUESTION (Stores x, y, and z...) in the Data Sufficiency forum
“the order in which percentage changes are applied doesn''t make a diffence. Adding 5%, then discounting 5% is akin to multiplying by (1.05)*(0.95). Adding 5% = multiplying by 1.05. Discounting by 5% = multiplying by 0.95. the order in which the changes occur makes no difference since ...”
February 19, 2014
Patrick_GMATFix posted a reply to What would be the quickest way to solve this? in the Data Sufficiency forum
“An integer with a units digit of 0 must be divisible by 10. An integer is divisible by 10 if it has 2 and 5 among its factors. Rephrase: Are 2 and 5 both factors of N? (1) 2 must be a factor because 14 (2*7) is. 5 must be a factor because 35 is. SUFFICIENT (2) This gives us the exact value ...”
February 19, 2014
Patrick_GMATFix posted a reply to Edmund Fitzgerald in the Critical Reasoning forum
“Premise: if the separate pieces had been floating, the storm would have forced them to drift apart. However the pieces were found together at the bottom Conclusion: The breakup of the hull did not cause the sinking (in other words, the ship did not break up on the surface) To come up with ...”
February 18, 2014
Patrick_GMATFix posted a reply to City population decrease in the Critical Reasoning forum
“Do not mistake this for a Strengthen question. Read the question carefully and you will notice that the information in the passage is used to support a claim in the answer choices. This is an inference question (it asks for a conclusion that can be made from the given premises). For such questions, ...”
February 18, 2014
Patrick_GMATFix posted a reply to Lab rats and vitamins in the Sentence Correction forum
“This is a comparison test. The right answer must accurately compare the number of calories in the new diet to the number of calories in the usual diet. There is also a meaning test. It doesn''t make sense to say "a diet of calories"; it makes more sense to say "a diet that has ...”
February 18, 2014
Patrick_GMATFix posted a reply to Geologiests in South Africa in the Sentence Correction forum
“At its core, this sentence tests parallel structures and pronoun agreement. "Geologists have found that streams changed, from X to Y / shifting from X to Y". Either option is correct so long as X and Y are parallel. The full solution below is taken from the GMATFix App. ...”
February 18, 2014
Patrick_GMATFix posted a reply to OG - Quant Review - PS - Q199 in the Problem Solving forum
“The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/7705_thumb.png -Patrick”
February 16, 2014
Patrick_GMATFix posted a reply to OG - Quant Review - PS - Q129 in the Problem Solving forum
“The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/7635_thumb.png -Patrick”
February 16, 2014
Patrick_GMATFix posted a reply to is 5^k less than 1,000? in the Data Sufficiency forum
“The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5567_thumb.png -Patrick”
February 16, 2014
Patrick_GMATFix posted a reply to Contributions to gift certificate in the Data Sufficiency forum
“(1) is straightforward. everyone contributes $4 to pay for $60, so there must be 60/4 people contributing. Since "Every member" contributes, all members are accounted for. (2) In general, whenever you deal with an equation of the form a*b=c with positive variables (eg: ...”
February 16, 2014
Patrick_GMATFix posted a reply to compound interest in the Problem Solving forum
“Leverage the shortcut provided. The investment doubles every 70/r years. In this case, r=8, so the investment will double in a little under 9 years. In 18yrs, the investment will come close to doubling twice. 5000 -> 10,000 -> 20,000. The full solution below is taken from the GMATFix App. ...”
February 16, 2014
Patrick_GMATFix posted a reply to Which must be greate than 1? in the Problem Solving forum
“Since we''re dealing with positive integers, we can cross multiply to find that p < q. As a result, q/p must be greater than 1 (answer E). The full solution below is taken from the GMATFix App. It discusses each answer choice in detail http://www.gmatfix.com/video_snap/5312_thumb.png ...”
February 16, 2014
Patrick_GMATFix posted a reply to Perimeter of an isosceles triangle in the Data Sufficiency forum
“"Obtuse" means greater than 90 degrees. I have never seen this vocabulary tested on an official question without its definition. The known sides are 6 and 6root(3). Since the triangle is isosceles, the 3rd side must be 6 or 6root(3). Knowing which will allow us to find the perimeter. ...”
February 16, 2014
Patrick_GMATFix posted a reply to Cylinder with largest volume in the Problem Solving forum
“Correct.”
February 16, 2014
Patrick_GMATFix posted a reply to To find the edge of the cube in the Problem Solving forum
“Correct.”
February 16, 2014
Patrick_GMATFix posted a reply to Probability that PB less than or eqal to root 45 in the Problem Solving forum
“Sri, another really good question. Where are these questions from? We know that P is on AD, so the probability that length PB <= root(45) must equal the section of AD for which this holds true divided by the entire length of AD. http://snag.gy/uz5c2.jpg -Patrick”
February 16, 2014
Patrick_GMATFix posted a reply to To find the perimeter in the Problem Solving forum
“Sri, You assumed that the sides of the squares are parallel to the x and y axes. As you drawing shows, this is not possible since the shape you drew is not a square. Think of the question in more simple terms: Given the length of a diagonal (the distance between two opposite vertices), what is ...”
February 16, 2014
Patrick_GMATFix posted a reply to Is quadrilateral ABCD a rectangle? in the Data Sufficiency forum
“Sri, A square is a subset of the rectangle family, just as a rectangle is a type of quadrilateral (whose opposite sides are parallel), just as a quadrilateral is a type of polygon (which has 4 sides). A square is a special type of rectangle with equal sides. As a result, if something is a ...”
February 16, 2014
Patrick_GMATFix posted a reply to Is point P the center of the circle? in the Data Sufficiency forum
“Hi again Sri, The set of points equidistant from A and B form a line perpendicular to AB (also known as the perpendicular bisector of AB). For instance, when (1) states that PA=PB, P can be any point on the red line segment below. Likewise when (2) states that PA=PC, P can be any point on green ...”
February 16, 2014
Patrick_GMATFix posted a reply to Largest possible area of inscribed triangle in the Problem Solving forum
“Sri, the biggest triangle is an isoceles right triangle. Imagine building a triangle from the center. As the central angle is very small (0 degrees), the area of the triangle collapses to 0. Likewise, as the central angle opens up to 180 degrees, the area grows, then collapses to 0. See the red ...”
February 16, 2014
Patrick_GMATFix posted a reply to Sofa dimensions in the Data Sufficiency forum
“My rephrase was: is the smallest side < 4, and the next smallest side < 8? That''s what is required to fit through the door. Your plugins are good Sri. They show that (2) is not sufficient.”
February 16, 2014
Patrick_GMATFix posted a reply to Smaller cubes that have no paint? in the Problem Solving forum
“What a great question Sri. (cubes-along-length) * (cubes-along-width) * (cubes-along-height) = 216 total cubes. Since length,width and heights are the same, we can say that (cubes-along-any-edge) = cubic root of 216 = 6. All the cubes that make up the skin of the big cube are painted. The ...”
February 16, 2014
Patrick_GMATFix posted a reply to Pretzel Vendors in the Critical Reasoning forum
“To strengthen an argument, the right answer will make the argument more convincing by doing one of the following: (1) adding supporting evidence. Eg: new info that will make a pretzel stand outside the art museum less profitable (2) affirming assumptions. Eg: info that indicates that traffic ...”
February 16, 2014
Patrick_GMATFix posted a reply to Thank You and tips in the Critical Reasoning forum
“An assumption is something that must be true for the conclusion to follow from the given premises. In this argument, the author concludes that if servers across the country wrote "Thank You" on the bills, tips will increase significantly. Since the argument is based on sampling data, it ...”
February 16, 2014
Patrick_GMATFix posted a reply to Adequate sleep in the Sentence Correction forum
“Modifiers are incorrectly used in A, B & C (modifiers should target People, not their skills). E commits a redundancy ("the adequate sleep they need") and uses "also" which is less precise in meaning than "even". The full solution below is taken from the GMATFix ...”
February 16, 2014
Patrick_GMATFix posted a reply to Clammers in the Sentence Correction forum
“This is a tough one. The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8473_thumb.png -Patrick”
February 16, 2014
Patrick_GMATFix posted a reply to Percentages - avg price per person in the Problem Solving forum
“Hey Tanvis1120, You did a great job with approximations, but be careful:If $207 is base price + 15% gratuity, then removing 15% from $207 will not get you back to the base price. Why? 15% gratuity is 15% of the base price, so when you subtract 15% of $207, you are actually subtracting a different ...”
February 16, 2014
Patrick_GMATFix posted a reply to Is |n|<1? in the Data Sufficiency forum
“You''re right Safina. I got careless. It should be n at the top, not x! Let me re-write and repost a solution... Done. (I''ve changed the image in my original post above)”
February 15, 2014
Patrick_GMATFix posted a reply to Inequalities in the Data Sufficiency forum
“Very nice question: http://snag.gy/kqXYo.jpg Hope that helps, -Patrick”
February 14, 2014
Patrick_GMATFix posted a reply to As a baby emerges from the darkness of the womb.. in the Sentence Correction forum
“This is a tough one. The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5826_thumb.png -Patrick”
February 14, 2014
Patrick_GMATFix posted a reply to My Thank You to BTG: GMATFix License Give-Away in the GMAT Strategy forum
“Hi Parveen, There are still a few spots left, no worries. Next time you start the App, click the LICENSE button on the bottom right of the startup screen and your copy will be licensed. Get the Self-Study PDF guide on my site for instructions on how to make the most of the software. Make the ...”
February 14, 2014
Patrick_GMATFix posted a reply to Is |n|<1? in the Data Sufficiency forum
“http://snag.gy/Dylfb.jpg -Patrick”
February 14, 2014
Patrick_GMATFix posted a reply to Inflation index & Model K mixer in the Data Sufficiency forum
“This is a ratio. Every dollar spent in 1970 corresponds to 3.56 dollars in 1989. So we can express the price of both years in terms of the same variable: p and 3.56p. Data about any relationship between the two prices will result in an equation that has only one variable, and that we can likely ...”
February 14, 2014
Patrick_GMATFix posted a reply to Is x|x| < 2^x? in the Data Sufficiency forum
“|x| = x when x is positive, but -x when x is negative. So we can think of this as a set of two questions: If x>0, is x^2 < 2^x? If x<0, is -x^2 < 2^x? The full solution below shows how to solve in under a minute. It is taken from the GMATFix App. ...”
February 14, 2014
Patrick_GMATFix posted a reply to Car dealer sales in the Problem Solving forum
“At least 2 approaches come to mind: I: Plug in an easy value for N (something that can be divided by 30, the LCM of the denominators in the answer choices), then solve the problem assuming that value of N. Finally plug the picked value into the answers and select the answer that matches your ...”
February 14, 2014
Patrick_GMATFix posted a reply to Percentages - avg price per person in the Problem Solving forum
“At least 3 approaches I: get the total price+gratuity per person as 207/15. This is equal to price + 15%. so 207/15 = 1.15p. Solve for p. II: 207 is the sum-of-prices+15%. to get the sum-of-prices, set 207 = 1.15*sum. Once you have the sum, divide by 15 to get the price per person, excluding ...”
February 14, 2014
Patrick_GMATFix posted a reply to Narwhals in the Sentence Correction forum
“Parveen thank you for your kind words. I still have a few licenses to the GMATFix App to give away and it looks like you are eligible; if you find my videos helpful, you will have access to tons of helpful material within the App. See my post here for more info. Ok let''s get back to the question ...”
February 14, 2014
Patrick_GMATFix posted a reply to If x is an integer, what is the value of x^2 + x ? in the Data Sufficiency forum
“Sri, Be careful: When a DS question asks you for the value of an expression, SUFFICIENT information means that you have enough to know the exact numerical value. So in general, proving that |x|+x = 2x is not enough to say that you have sufficient info to find |x|+x, unless you know exactly what ...”
February 14, 2014
Patrick_GMATFix posted a reply to Centralia corn in the Critical Reasoning forum
“Fill-in-the-blank questions require you to complete the author''s train of thought. In this scenario, the right answer must provide a reason that explains why farmers will choose not to plant soybeans even though (1) it is the soybean planting season, (2) fields are dry enough for planting, (3) and ...”
February 14, 2014
Patrick_GMATFix posted a reply to OLEX Petroleum in the Critical Reasoning forum
“The conclusion is that OLEX''s decision to keep Grenville open shows that social concerns outweigh profit concerns at the company. This is based on 2 premises: (1) OLEX determined that it could cut refining costs by closing Grenville, and (2) Closing Grenville would lead to heavy job loss and ...”
February 14, 2014
Patrick_GMATFix posted a reply to Emperor penguins in the Sentence Correction forum
“The first split is in how to introduce the modifier: "reducing" or "which reduces". Modifiers introduced with "-ing" modify the action in the previous clause, while modifiers introduced with a relative pronoun (which, when, who...) modify the noun phrase just before ...”
February 14, 2014
Patrick_GMATFix posted a reply to Beavers in the Sentence Correction forum
“"their numbers" is the proper way to refer to the number of individuals in a population (idiomatic). In addition, only similar things can be compared so it doesn''t make sense to write "their numbers have declined compared with the 18th century" (we cannot compare the number of ...”
February 14, 2014
Patrick_GMATFix posted a reply to Exponents. what is z? in the Data Sufficiency forum
“Looking at z^n=1, you may think that either z=1 and n=anything or n=0 and z=anything. Be careful though: we don''t know from the prompt whether we''re dealing with integers, and even if we are, we cannot assume that we''re dealing with positive numbers (-1^2 = 1). The full solution below is ...”
February 13, 2014
Patrick_GMATFix posted a reply to Is r/s an integer? in the Data Sufficiency forum
“the difference between the two statements is subtle but important. If every factor of s is a factor of r, then s itself must be a factor of r (every integer is a factor of itself) and r/s must be an integer. On the other hand, if every prime factor of s is a prime factor of r, s and r could be the ...”
February 13, 2014
Patrick_GMATFix posted a reply to Shipping department salaries in the Problem Solving forum
“In general when a GMAT question asks about average, you should think about total. 15 ppl average $20k, so altogether they must earn $300k. We''re given the tools to find how much the first 9 employees earn total (5*$25k + 4*$16k). Subtracting that from the $300k will give us the total of the ...”
February 13, 2014
Patrick_GMATFix posted a reply to Percentage of income in the Problem Solving forum
“One approach is to plug-in values. Since the Q asks for Mary''s as a % of Juan''s income, it would be easiest to make J=100 and go from there. Tim''s is 40% less than Juan, so T=60. Mary''s is 60% more than Tim so M=60+36=96. M=96 and J=100, so Mary''s is 96% of Tim''s Another approach is ...”
February 13, 2014
Patrick_GMATFix posted a reply to Lepenski Vir boulders in the Sentence Correction forum
“Modifiers that begin with -ing after a comma typically describe the entire clause before the comma. They usually... (1) explain how the main clause action happened: "John became the best, surpassing all others." (2) explain the effect of the main clause action: "We found a new ...”
February 13, 2014
Patrick_GMATFix posted a reply to Anoca County schools in the Critical Reasoning forum
“Property tax will be replaced with 3% of sales taxes as the source of school funding. Although 3% of sales taxes is currently the lesser amount, school funding will not necessarily be reduced because _____ The right answer to a fill-in-the-blank must complete the author''s train of thought. Here ...”
February 13, 2014
Patrick_GMATFix posted a reply to FastMart convenience store in the Critical Reasoning forum
“The objective is to maximize sales. To achieve it, the argument says that we should stock the regular syrup because 75% of customers surveyed prefer it. There are 3 ways to weaken an argument: 1) Negate the assumptions. The argument assumes that (a) survey results reflect customer preferences at ...”
February 13, 2014
Patrick_GMATFix posted a reply to Narwhals in the Sentence Correction forum
“Notice that the underlined part starts with "and", so what follows is the end f a parallel structure. we must accurately complete "they seek sanctuary and...their migrations follow". The full solution below is taken from the GMATFix App. ...”
February 13, 2014
Patrick_GMATFix posted a reply to Lepenski Vir boulders in the Sentence Correction forum
“Subject-Verb agreement ("Boulders...include") is tested. In addition, logical modification is tested (B describes boulders as "examples of art", but C describes them as "earliest of art"). The full solution below is taken from the GMATFix App. ...”
February 13, 2014
Patrick_GMATFix posted a reply to Does v equal zero? in the Data Sufficiency forum
“Be careful how you handler statement 1. A common mistake is to divide both sides of an equation by an unknown, without accounting for the possibility that the unknown could equal zero. Doing so can lead to erroneous results. For instance consider xy = y. What is x? If we divide both sides by y, ...”
February 11, 2014
Patrick_GMATFix posted a reply to Words per paragraph in the Data Sufficiency forum
“When a GMAT Q asks about average, it''s usually helpful to think in terms of total. In this case, for average words per paragraph (wpp) to be exactly 120, the total words in all 25 paragraphs must be 25*120 = 3,000 words. Since we know that the main report contains 2,600 words, the question is ...”
February 11, 2014
Patrick_GMATFix posted a reply to Product of 2 ints whose sum is 11 in the Problem Solving forum
“x + y = 11 xy = ? One approach is to work backwards, using each answer choice as the value of xy, then figuring out whether that answer leads us to integer values for x and y. The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5301_thumb.png -Patrick”
February 11, 2014
Patrick_GMATFix posted a reply to Stereo sales tax in the Problem Solving forum
“Retail price + 6% is 1.06r. Retail price + 5% is 1.05r. We''re asked to find the difference between the two (0.01r), given that 1.06r = $530. To solve quickly, just divide 1.06r by 106 to get .01r. So the answer will be 530/106 = 5. The full solution below is taken from the GMATFix App. ...”
February 11, 2014
Patrick_GMATFix posted a reply to Migrating shorebirds in the Critical Reasoning forum
“the birdwatcher''s objection centers on the idea that if the city reserves more beach front to the crabs for nesting, the crab population will become less dense and this will hurt rather than help the birds (the birds need high density of crabs to prosper). To counter this objection the right answer ...”
February 10, 2014
Patrick_GMATFix posted a reply to Meditation for high blood pressure in the Critical Reasoning forum
“There are 3 basic ways to weaken an argument: (1) negate its assumptions: eg. here the author compares the % of people who take medication regularly to the % of study participants who stick to meditation. The argument assumes that what happens in the study is a reflection of what happens in the ...”
February 10, 2014
Patrick_GMATFix posted a reply to Surface of Europa in the Sentence Correction forum
“Subject-verb agreement for "cause(s)" is tested. Its subject is "the force", not "Jupiter & its moons". Also pay attention to the intended relationship between contractions and heat generated; the right sentence must correctly explain that the contractions ...”
February 10, 2014
Patrick_GMATFix posted a reply to Scandinavian assault in the Sentence Correction forum
“The sentence tests the proper construction of a modifier. Modifiers beginning with a relative pronoun (such as "which") or target the noun or noun phrase just before the comma whereas modifiers beginning with -ing or a noun can be broader. In addition, the issue of passive/active construct ...”
February 10, 2014
Patrick_GMATFix posted a reply to Idiom 'Centers on + ?' in the Sentence Correction forum
“Hi Uva, As bill explained, in "the story centers on the struggle", "struggle" is a noun. Whenever you see "a, an, the" a possessive pronoun such as "my, your, our, their", or a possessive noun such as "John''s, the company''s" a noun will ...”
February 9, 2014
Patrick_GMATFix posted a reply to Idiom 'Centers on + ?' in the Sentence Correction forum
“Uva I''m not sure I understand your question. Are you asking what that sentence means? Or whether the idiom is properly used? "The story centers on the struggle for meaning" implies that "the struggle for meaning" is at the center of the story. It is the central part and ...”
February 8, 2014
Patrick_GMATFix posted a reply to inequality in the Data Sufficiency forum
“Statement 1 tells us that the left side of the inequality in the original Q is negative. Since the right side (x^2) must be at least 0, we know that it must be greater than the left side 2x-3y must be less than x^2. we can definitively answer the Q. Statement 2 is most useful if we manipulate the ...”
February 8, 2014
Patrick_GMATFix posted a reply to ratio of rectangle sides in the Data Sufficiency forum
“statement 1 just tells us that 2(KN + MN) = 30. We can come up with a lot of values for KN and MN that would result in different ratios, so that statement is not helpful. Statement 2 is more interesting. If all the rectangles are the same, we can start to label sides using only two variables ...”
February 8, 2014
Patrick_GMATFix posted a reply to time to fill a pool in the Problem Solving forum
“A different approach relies on the fact that rate and time are inverses of one another. If it takes 5hrs to fill a pool (time), the rate is 1/5 pool per hour. This rule along with the fact that the sum of rates is the combined rates when machines work together simultaneously can lead to a very fast ...”
February 8, 2014
Patrick_GMATFix posted a reply to Intensity scale readings in the Problem Solving forum
“Each reading (n+1) is 10 times higher in intensity than the one below (n), so the next higher reading (n+2) will be 100 times (10^2) higher than the initial reading (n). Each time the reading is increased by 1, the intensity is multiplied by 10. So going from a reading of 3 to a reading of 8 will ...”
February 8, 2014
Patrick_GMATFix posted a reply to Modifiers--Please help in the Sentence Correction forum
“Hi Dan, Honestly, I don''t understand why "James is Max''s supposed Irish ancestor" is right but "Max''s grandmother is his supposed Irish ancestor is wrong. After all, both sentences can be simplified to "X is his supposed Irish ancestor". What I can say though is ...”
February 7, 2014
Patrick_GMATFix posted a reply to Angola,which was ravaged--Modifiers in the Sentence Correction forum
“Hey Dan, Overall, your version is well constructed and is a massive improvement over the original. At its core it states: "Ravaged by war, Angola, which is a success, has an economy and has elections." Still, I think your sentence has some weaknesses: 1) the modifying clause ...”
February 7, 2014
Patrick_GMATFix posted a reply to Government standards in the Critical Reasoning forum
“An assumption is an unstated proposition that must be true for the argument to be valid. In this case, the author claims that since the small companies would be unable to afford the conversion, new manufacturing specs would put them all out of business. Ask yourself "does this have to be true? ...”
February 7, 2014
Patrick_GMATFix posted a reply to The Nile Delta in the Critical Reasoning forum
“The right answer to an Evaluate the Argument question will provide information key to determining how strong the argument is; typically this is information useful in determining whether the assumptions made were correct. In this case, we want to evaluate the evidence archeologists use to conclude ...”
February 7, 2014
Patrick_GMATFix posted a reply to Music copy in the Sentence Correction forum
“The underlined portion introduces a modifying phrase expressing 3 ways in which audiophiles can accumulate vast collections of music. The forms used for "transfer", "copy" and "alter" must be parallel. Most wrong answers fail in this respect. The full solution below is ...”
February 7, 2014
Patrick_GMATFix posted a reply to Lotus body temperature in the Sentence Correction forum
“The correct answer should directly compare either humans and animals to the lotus, or what humans and animals can do to what the lotus can do. Further, we can eliminate any choice that uses "like" to compare clauses (the 2nd comparison option in the previous sentence). It''s incorrect to ...”
February 7, 2014
Patrick_GMATFix posted a reply to Permutations: Can someone explain this? in the Problem Solving forum
“My approach is to directly find what we''re looking for. Matt and Peter can either both sit in the back, or one of them can be in the passenger seat. If we add up the number of arrangements from each of these two scenarios, we''ll find all the ways the family can seat. Scenario 1: M & P ...”
February 3, 2014
Patrick_GMATFix posted a reply to Compound Interest in the Problem Solving forum
“Compound interest implies that each month the account balance grows by a fixed percentage (a constant multiplier). For instance if the interest is 10%, each month the balance will be multiplied by 1.10. Let''s call this multiplier g. The following table shows the account balance at the start of each ...”
February 3, 2014
Patrick_GMATFix posted a reply to what is a + b squared? in the Data Sufficiency forum
“When a question throws portions of the common Quadratics your way -- (a+b)^2, (a-b)^2 or (a+b)(a-b) -- you should write out the full equation and fill in what you know in order to figure out what you can solve for. For instance, if we write up the expanded versions of (a+b)^2 and (a-b)^2 side by ...”
February 1, 2014
Patrick_GMATFix posted a reply to Sara and Bill's ages in the Data Sufficiency forum
“There are just 2 variables. Sara''s and Bill''s ages. The prompt (Sara''s age is exactly twice Bill''s) gives us one simple relationship between the two (a linear equation). Note that each of the answer choices also gives us a simple relationship between the variables. So from each answer choice ...”
February 1, 2014
Patrick_GMATFix posted a reply to Nancy's furniture store sales in the Problem Solving forum
“Nancy''s pay is made up of a base pay of $240 and a bonus of 5% of any sales above $800. Since Nancy earned $450, we know that the $230 bonus corresponds to 5% of sales above 800. The equation $230 = 5% * x would allow us to find x, the portion of sales above $800. Adding $800 to that portion will ...”
February 1, 2014
Patrick_GMATFix posted a reply to meters in x minutes in the Problem Solving forum
“One approach is to plug in values. Another is algebra. My preferred approach is to setup direct proportions. since the rate does not change, and rate is distance/time, we can write d1/t1 = d2/t2 where the distances are m and d, and the times are s seconds and x minutes (60x seconds). We''re looking ...”
February 1, 2014
Patrick_GMATFix posted a reply to Tufe Peninsula sunflowers in the Critical Reasoning forum
“An assumption is something that is unstated, but that has to be true for the conclusion to be valid. In this case, the author concludes that the height of the flower is partly explained by environmental changes, based on the premise that the island is drier than the Peninsula was (note that the ...”
January 29, 2014
Patrick_GMATFix posted a reply to Berinia traffic deaths in the Critical Reasoning forum
“The right answer will explain how even though young people drink just as much as before, alcohol-related traffic deaths among young people decreased significantly. The answer will probably explain that though young people still get drunk, they are no longer drunk on the road. The full solution below ...”
January 29, 2014
Patrick_GMATFix posted a reply to Natural gas vs oil in the Sentence Correction forum
“Because the sentence starts with a modifier for natural gas, the underlined portion should begin with natural gas. The idiom "less than" is also tested. "less...as" is not correct. The full solution below is taken from the GMATFix App. ...”
January 29, 2014
Patrick_GMATFix posted a reply to Antipoverty initiatives in the Sentence Correction forum
“"few" should be used instead of "little" when modifying countable items (Answers A, B). "few" technical skills is better than "little" technical skills. In addition, we can eliminate choices that incorrectly claim that wages have skills instead of workers ...”
January 29, 2014
Patrick_GMATFix posted a reply to banks service charges in the Sentence Correction forum
“The right answer should be a simple way to modify "accounts". The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8461_thumb.png -Patrick”
January 29, 2014
Patrick_GMATFix posted a reply to Area of parking lot in the Data Sufficiency forum
“the figure can be broken into a 45 x 60 rectangle in the middle, a 15 x 60 right triangle on the left(SWR), and an unknown right triangle on the right with height 60 and base unknown. To find the area, we need a way to figure out the base of that unknown triangle. Notice that we already know that ...”
January 29, 2014
Patrick_GMATFix posted a reply to terminating decimals in the Data Sufficiency forum
“To know whether r/s will terminate, we need either some information about the ratio r/s, or information about the denominator s that guarantees termination (example if s=1, 2, 4, 5, or 10, the ratio will always result in a terminating decimal). The full solution below is taken from the GMATFix App. ...”
January 29, 2014
Patrick_GMATFix posted a reply to Please help me with the solution in the Problem Solving forum
“speed/rate = distance/time. Plug-In: If each of Anne''s hops covers a distance of 5 inches, then each of Beth''s will cover a distance of 4 inches. Since according to our plug-ins above, Anne covers a distance of 5 in. and Beth 4 in. with each hop, this can be rephrased as "in the time ...”
January 29, 2014
Patrick_GMATFix posted a reply to necklace bead colors in the Problem Solving forum
“the pattern repeats itself after every five terms (red, green white, blue, yellow, red...) so if we start with a red, the last yellow bead will be the 5th, 10th, 15th, 20th... bead (a multiple of five) and the white bead that follows must be a multiple of 5 + 3 (8th, 13th, 18th, 23nd...). Only ...”
January 29, 2014
Patrick_GMATFix posted a reply to sum of sequence in the Problem Solving forum
“Since we''re dealing with consecutive integers, the 6th is 5 more than the 1st, the 7th is 5 more than the 2nd etc... Since each unknown integer is 5 more than each known integer, the five unknown integers will have a sum 5*5=25 more than the sum of the five known integers. The sum of the last five ...”
January 29, 2014
Patrick_GMATFix posted a reply to Pls help me understand this question in the Data Sufficiency forum
“Let X be the company whose stock increased by 10% (the rival), and Y be the other. Now suppose the stock prices started at 100x and 100y. X''s stock price went up 10% from 100x to 110x Y''s stock price dropped 10% from 100y to 90y Y''s value today (90y) is what percentage of X''s value last ...”
January 29, 2014
Patrick_GMATFix posted a reply to Copeland cigarette tax in the Critical Reasoning forum
“Raoul does not dispute Sonya''s premise (prices will still be low, and consumption will not be affected), but he challenges her conclusion (that govt revenue from the tax will increase) by introducing a new premise (new prices will be higher than others in the region) and suggesting an alternate ...”
January 29, 2014
Patrick_GMATFix posted a reply to Sea Otters population decline in the Critical Reasoning forum
“There are 3 basic ways to weaken an argument: (1) add a counter premise (2) refute an assumption (3) draw a different conclusion from the given premises Here the right answer should suggest that increased predation by killer whales is the reason for the population decline. The full solution ...”
January 29, 2014
Patrick_GMATFix posted a reply to Industrial pollutants in the Sentence Correction forum
“The precise meaning intended is that the study shows that compounds had entered the food chain and that those compounds were dangerous. Eliminate sentences saying that the study showed the compounds entering the food chain, or that the study showed the entry of the compounds into the food chain. ...”
January 29, 2014
Patrick_GMATFix posted a reply to Reptiles body heat in the Sentence Correction forum
“Since different ways of generating body heat are contrasted, parallel structures must be maintained ("by drawing rather than " OR "by drawing instead of " would be ideal). The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8459_thumb.png ...”
January 29, 2014
Patrick_GMATFix posted a reply to Can someone explain this? in the Data Sufficiency forum
“-(-0)=|-0| is valid. -0 and 0 are the same, so that equation is the same as 0 = |0|. My approach to solving the question. No rephrase needed: Is n < 0 ? 1) Since -n = |-n|, we can tell that -n is a value that doesn''t change when you put it inside absolute value brackets. Only 0 and ...”
January 28, 2014
Patrick_GMATFix posted a reply to OG 13, PS Q 178 - "Sweaty palms" in the Problem Solving forum
“The illustrated solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/7684_thumb.png -Patrick”
January 28, 2014
Patrick_GMATFix posted a reply to OG 13 #178 - Virtual Reality in the Problem Solving forum
“The illustrated solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/7684_thumb.png -Patrick”
January 28, 2014
Patrick_GMATFix posted a reply to Any new explanation to this answer?? in the Problem Solving forum
“This is a tough question to wrap your head around, and my approach is very different. The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/7724_thumb.png Note that in your original posting, there is a typo that makes the question impossible to solve; you ...”
January 28, 2014
Patrick_GMATFix posted a reply to OG 114 in the Problem Solving forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/7620_thumb.png -Patrick”
January 28, 2014
Patrick_GMATFix posted a reply to How to start GMAT QUANT preparation in the Problem Solving forum
“I get this kind of question a lot, so I''ve written up a self-study guide that you might find helpful. On my website (GMATFix), select "Resources -> Documents & Links" from the main menu. The self-study instructions will be at the top left of the page. Good luck, -Patrick”
January 28, 2014
Patrick_GMATFix posted a reply to sequences and primes in the Data Sufficiency forum
“The only prime number that is a factor of every term is 3. Rephrase: is p = 3? The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5537_thumb.png -Patrick”
January 28, 2014
Patrick_GMATFix posted a reply to cost of antifreeze in the Data Sufficiency forum
“don''t worry about trying to convert gallons to quarts. just think of x as the price of one unit of antifreeze X, and think of y as the price of one unit of motor oil Y. We just want to find the value of x+y. The full solution below is taken from the GMATFix App. ...”
January 28, 2014
Patrick_GMATFix posted a reply to decimal equivalent in the Problem Solving forum
“Realize that 1/5 = 0.2 and that 2^5 = 32, so only answer A makes sense. The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5270_thumb.png -Patrick”
January 28, 2014
Patrick_GMATFix posted a reply to square root in ratio in the Problem Solving forum
“The solution below is taken from the GMATFix App (this is QID 5263). http://www.gmatfix.com/video_snap/5263_thumb.png -Patrick”
January 28, 2014
Patrick_GMATFix posted a reply to Use of Each in the Sentence Correction forum
“What''s the source of the question please? The right answer makes me a uneasy as well. I would have been ok with: 1) Each of the three carriers, A, B, and C, generates $1 billion 2) The three carriers, A, B, and C, generate $1 billion each”
January 27, 2014
Patrick_GMATFix posted a reply to Strategy to handle a comparison Sentence Correction Problem in the Sentence Correction forum
“Just my opinion: if reading up on rules and strategies in a good book did not help you, reading up on general strategies from a forum post may not help much either. You might have better luck working through problems with someone better than you (friend/tutor) so that you can get feedback on ...”
January 27, 2014
Patrick_GMATFix posted a reply to POLAR ICE in the Sentence Correction forum
“We can ignore everything before "yet" because "yet" is one of seven conjunctions that will tie one indepedent clause to another. As a result all that comes after "yet" should be able to stand alone as a full sentence. At its core, answer B tells us: B) Temps are ...”
January 27, 2014
Patrick_GMATFix posted a reply to Please explain the topic being tested here in the Sentence Correction forum
“The author tries to list things that will prevent Balzac from admission to a high rank. Things should be listed in parallel. Secondly, the main clause (not underlined) states: "his example...makes him influential". It makes sense then that the early part of the sentence begins with ...”
January 27, 2014
Patrick_GMATFix posted a reply to Meaning issue in the Sentence Correction forum
“The issue you raised does not distinguish A from C. Both answers basically say "G. served his way out of the break against A." I don''t think there is a meaning problem there, since it is in fact what the author intends to say. I have a problem with the sentence in general because one ...”
January 27, 2014
Patrick_GMATFix posted a reply to Not sure in the Sentence Correction forum
“It''s about verb tense. Let''s compare simplified versions of the sentences. D) 30yrs after the first game, Sacchin became x. E) 30yrs after the first game, Sacchin had become x. The past perfect (Saccin had become) should only be used to refer to the earlier or oldest of two related past ...”
January 27, 2014
Patrick_GMATFix posted a reply to moths and predators in the Critical Reasoning forum
“All fill-in-the-blanks require you to complete a thought the author has begun. In this case, what goes in the blank is the result of the phenomenon described. Rephrase: Large moths typically fly faster so they can evade predators better, BUT they need a higher temperature to fly so ______. The ...”
January 27, 2014
Patrick_GMATFix posted a reply to Domorica newspapers in the Critical Reasoning forum
“There are 3 basic ways to strengthen a conclusion: (1) add supporting evidence (ex. Ppl tend to to increase their newspaper reading as they age from their 20s to their 30s+) (2) confirm the assumption (ex. Ppl''s propensity to read is not fixed for life -- otherwise we would expect reading rates ...”
January 27, 2014
Patrick_GMATFix posted a reply to 1980s interest rates in the Sentence Correction forum
“In a comparison, parallel structure is needed. The right sentence must correctly compare last year''s interest rates to 1980s interest rates (not to the 1980s themeselves). Note also that the underlined portion ends with a modifier that refers to the 1980s (when the economy tumbled). This means ...”
January 27, 2014
Patrick_GMATFix posted a reply to English Channel swim in the Sentence Correction forum
“Idiom (not only X...but also Y) is tested, where X and Y should be parallel(she not only crossed....but also set). The full solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8456_thumb.png -Patrick”
January 27, 2014
Patrick_GMATFix posted a reply to Permutation and combination in the Problem Solving forum
“Just think of the integers as different numbers that get grouped into pairs. Two groups are considered "mates" if the same number belongs to both groups and "non-mates" if the two groups have no overlap. With that, rephrase the question. Q1. For any given pair, how many ...”
January 24, 2014
Patrick_GMATFix posted a reply to what day was the appointment in the Data Sufficiency forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5532_thumb.png -Patrick”
January 24, 2014
Patrick_GMATFix posted a reply to Jefferson School in the Data Sufficiency forum
“There are several ways to solve this type of question, including groups table, venn diagram, and group formula. The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5530_thumb.png -Patrick”
January 24, 2014
Patrick_GMATFix posted a reply to random sum equals 9 in the Problem Solving forum
“Find out the number of pairs that add up to 9 and put that over all possible pairs to find the requested probability. The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5251_thumb.png -Patrick”
January 24, 2014
Patrick_GMATFix posted a reply to length of the third side in the Problem Solving forum
“the length of the 3rd side of any triangle is greater than the positive difference between the other two side lengths, but less than the sum of the other two side lengths. The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5232_thumb.png -Patrick”
January 24, 2014
Patrick_GMATFix posted a reply to GMAT Prep-Rows of Corn in the Critical Reasoning forum
“This is QID 2192 in the GMATFix Solutions Engine (full solution here). fill-in-the-blanks require you to complete the author''s line of thought. here the author tells us that even though each plant will produce less, profits per acre will double because ____. What goes in the blank (the ...”
January 23, 2014
Patrick_GMATFix posted a reply to GMAT Prep-Roman Mosaics in the Critical Reasoning forum
“This is QID 2302 in the GMATFix Solutions Engine (full solution here). An assumption is something that must be true for the conclusion to follow from the premises. Premises: animals depicted on motifs did not live in the city. Identical motifs appear in other Roman cities Conclusion: ...”
January 23, 2014
Patrick_GMATFix posted a reply to GMAT Prep-Antioxidants in the Sentence Correction forum
“This is QID 2307 in the GMATFix Solutions Engine (full solution here) without the "that" at the end of D, the sentence would be weaker; probably not strong enough to be a correct answer. In parallel structures, introductory words can be implied: Ex 1: I gave you a tool that ...”
January 23, 2014
Patrick_GMATFix posted a reply to GMAT Prep- The Yana in the Sentence Correction forum
“This is QID 2185 in the GMATFix Solutions Engine (full solution here). To pick between "banked" and "was banked", realize that we''re describing the framework of poles. "its framework of poles overlaid... and banked". eliminate C, D and E. A) ...”
January 23, 2014
Patrick_GMATFix posted a reply to GMAT Prep-Magpies in the Sentence Correction forum
“This is Question ID 2377 in the GMATFix Solutions Engine (full solution). Verb tense is tested. There are two correct ways to express the idea in the sentence. Correct option 1. "people had been attacked by the time they reached adulthood." This option uses past and past perfect to ...”
January 23, 2014
Patrick_GMATFix posted a reply to OG13 - Quant Review - DS - 49 in the Data Sufficiency forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5485_thumb.png -Patrick”
January 21, 2014
Patrick_GMATFix posted a reply to Total surface area in the Problem Solving forum
“A right solid is a 3D shape for which the vertical sides are perpendicular to the bases. In all such shapes, the volume is area of base * height. For example: volume of cube: area of square base * height (also known as side * side * side) volume of a right cylinder: area of circular base * ...”
January 21, 2014
Patrick_GMATFix posted a reply to Lotte Jacobi in the Sentence Correction forum
“The right sentence must correctly compare how successful Lotte was in New York to how successful she had been in Germany. All wrong choice commit an unbalanced comparison. Other issues tested include verb tense (past vs past perfect) and how to link ideas (contrast needed here). The full solution ...”
January 21, 2014
Patrick_GMATFix posted a reply to lying facilitates interactions in the Sentence Correction forum
“The sentence discusses "lying", so we can get rid of those choices that illegally refer to it with plural pronoun "they" (A, B, and C). Parallel structures are also tested; Psychologists are seeking to determine X and Y, where X and Y should be parallel. The full solution ...”
January 21, 2014
Patrick_GMATFix posted a reply to Henry VIII artifacts in the Sentence Correction forum
“This tests modifiers, pronouns, and sentence structure. The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8452_thumb.png -Patrick”
January 21, 2014
Patrick_GMATFix posted a reply to In a certain wildlife park in the Critical Reasoning forum
“The comparison between absolute numbers of fertile females from both groups has no impact whatsoever on the argument. This is because the author''s conclusion is about fertility "rates". Knowing that there are 500 fertile females in one group and only 8 in the other gives no information ...”
January 20, 2014
Patrick_GMATFix posted a reply to Who vs Whom in the Sentence Correction forum
“Notice that in explaining how to pick between "who" and "whom" in your sentences, I did not mention what "it" referred to. The antecedent of "it" has nothing to do with whether we use "who" or "whom". It''s true that "it" ...”
January 20, 2014
Patrick_GMATFix posted a reply to QUANT REVIEW 112 in the Data Sufficiency forum
“Thanks for the tip. I thought that using numbers to explain would just show an example rather than explain the logic behind the property I explain in the video, but maybe you''re right. Thanks for the feedback! I''m glad you found the video helpful. -Patrick”
January 19, 2014
Patrick_GMATFix posted a reply to Who vs Whom in the Sentence Correction forum
“"who" is only used as the subject of a verb ("who ate my cheese"). Otherwise, "whom" is used. In cases where you can replace who/whom with he/him or they/them, use that trick to help you. "The people to whom I spoke" is correct since I would say "I ...”
January 19, 2014
Patrick_GMATFix posted a reply to Birangi politicians in the Critical Reasoning forum
“The right answer should give us reason to believe that even though the tax will successfully reduce the number of new cars on the road, it will not significantly improve Birangi''s air quality. The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8525_thumb.png ...”
January 19, 2014
Patrick_GMATFix posted a reply to Mammoth extinction in the Critical Reasoning forum
“The phrasing of the question (the use of double negative) makes this a difficult problem. Make sure you understand the question before looking for an answer. In this case, the right answer should discredit Perkins'' argument about the absence of spearheads. The solution below is taken from the ...”
January 19, 2014
Patrick_GMATFix posted a reply to Politician's history in the Critical Reasoning forum
“This is probably not an official GMAT question because for inference/draw a conclusion question, the answer choice is typically something that we can prove or nearly prove without making any further assmptions. In this case, the best answer (C) relies on significant assumptions. Also, the question ...”
January 19, 2014
Patrick_GMATFix posted a reply to Cars in Clifton in the Critical Reasoning forum
“What is the question? I see only the argument and the answer choices.”
January 19, 2014
Patrick_GMATFix posted a reply to She was less successful after she had emigrated to new york in the Sentence Correction forum
“The key is to compare "like" concepts. The right sentence must compare how successful Jacobi was in New York to how successful she had been in Germany. It''s incorrect to write "she was less successful in New York compared to Germany" because this would be comparing a ...”
January 18, 2014
Patrick_GMATFix posted a reply to Household income decrease in the Data Sufficiency forum
“The trick is to realize that since we have no idea what happened to X income between the two years, we can''t get a good understanding of how Y''s income has decreased. There is never enough data here. The solution below is taken from the GMATFix App. ...”
January 18, 2014
Patrick_GMATFix posted a reply to which operation is represented in the Data Sufficiency forum
“the equation given would only work if the unknown operation were multiplication, so we''re really asked whether the unknown operation is multiplication. The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5525_thumb.png -Patrick”
January 18, 2014
Patrick_GMATFix posted a reply to which cannot be the value in the Problem Solving forum
“Be careful that you''re not answer "which cannot be the value of x" since that is not the question. In short, the fraction can never equal 0 because for a fraction to equal 0, the numerator must be 0. The solution below is taken from the GMATFix App. ...”
January 18, 2014
Patrick_GMATFix posted a reply to storm water reservoir in the Problem Solving forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5193_thumb.png -Patrick”
January 18, 2014
Patrick_GMATFix posted a reply to Complex Absolute Value Concept in the Data Sufficiency forum
“GMAT questions with 3 abs. value expressions are certainly rare. This is an equation with no solution. I would solve this by conceptualizing abs. value as a measure of distance. |a-b| is the distance from a to b on the number line. Just try it; |2-5| is the distance from 2 to 5. Absolute ...”
January 18, 2014
Patrick_GMATFix posted a reply to Basic P&C in the Problem Solving forum
“Q1. Rephrase: how many ways can we place 5 caps in 5 boxes, if each box has 1 cap. Suppose the boxes represent positions; we can think of this question as how many ways can we order 5 caps? This is simply 5! = 120 ways. Q2. "at least one cap has to be distributed" suggests that we ...”
January 18, 2014
Patrick_GMATFix posted a reply to Gulf coast pollution in dolphins in the Critical Reasoning forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8523_thumb.png -Patrick”
January 18, 2014
Patrick_GMATFix posted a reply to Megaplex theater popcorn in the Critical Reasoning forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8522_thumb.png -Patrick”
January 18, 2014
Patrick_GMATFix posted a reply to Male and female sizes in the Sentence Correction forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8451_thumb.png -Patrick”
January 17, 2014
Patrick_GMATFix posted a reply to Contemporary cognitive scientists in the Sentence Correction forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8449_thumb.png -Patrick”
January 17, 2014
Patrick_GMATFix posted a reply to Please clarify my doubt in the Problem Solving forum
“1.Order doesn''t matter and they can be repeated too. Since digits can be repeated, we pick from 6, then from 6. That''s 36 pairs. We need to remove duplicates (such as {1,2} and {2,1} since order doesn''t matter. 6 of the 36 pairs are the same digit repeated ({1,1} to {6,6}) and do not suffer ...”
January 16, 2014
Patrick_GMATFix posted a reply to Please clarify my doubt in the Problem Solving forum
“If we are asked to make subsets, the elements cannot be repeated. {1,1} is not a subset of {1,2,3,4,5,6}. It would be a subset of {1,1,2,3,4,5,6} -Patrick”
January 16, 2014
Patrick_GMATFix posted a reply to Click it or Ticket in the Critical Reasoning forum
“D is a pretty good answer but not as strong as A. We''re asked for an inference, which means the answer choice should be provable (or almost provable) from the information in the argument without any added assumption. The argument tells us that "under the new law, motorists can be pulled ...”
January 16, 2014
Patrick_GMATFix posted a reply to Isaac Newton in the Sentence Correction forum
“"each of which" on its own is no worse than "each". The former just needs to be used in the right context. It would be correct to say "all the planets, each of which contributes". However, the answer choices say "each of which contributing" (B) and ...”
January 16, 2014
Patrick_GMATFix posted a reply to Overtime pay in the Data Sufficiency forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5523_thumb.png -Patrick”
January 16, 2014
Patrick_GMATFix posted a reply to Company cruise in the Data Sufficiency forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5520_thumb.png -Patrick”
January 16, 2014
Patrick_GMATFix posted a reply to Sector income in the Problem Solving forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/4383_thumb.png -Patrick”
January 16, 2014
Patrick_GMATFix posted a reply to Most likely range in the Problem Solving forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/4420_thumb.png -Patrick”
January 16, 2014
Patrick_GMATFix posted a reply to ambiguous pronoun and modifier in the Sentence Correction forum
“a "referent" is a noun to which a pronoun refers. "Baltic Sea" is not an adjective. It is a noun, similar to "United States". Therefore, it can serve as a referent to the pronoun "its". In the sentence "John''s new novel is interesting, but his new ...”
January 16, 2014
Patrick_GMATFix posted a reply to little water or few services in the Sentence Correction forum
“Because "and" and "or" convey different meanings, you need to take a pause and think about what the author of the sentence is trying to say, then pick the choice that better reflects his intent. You''re right in suggesting that there is nothing illogical about "or" in ...”
January 16, 2014
Patrick_GMATFix posted a reply to the works now of contemporary in the Sentence Correction forum
“"the company focuses on the works now of English authors" and "the company focused on the works previously of English authors" are incorrect sentences. "Now" is an adverb, so it can only modify a verb (an action) or another adverb. An adverb cannot modify a ...”
January 16, 2014
Patrick_GMATFix posted a reply to X cannot detect when Y is present in the Sentence Correction forum
“In the sentence "X cannot detect when Y is present", what X cannot detect is "the presence of Y". The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/7282_thumb.png -Patrick”
January 16, 2014
Patrick_GMATFix posted a reply to Idioms - Explain the meaning of the sentence please in the Sentence Correction forum
“The idiom here is AS MUCH AS. The "so" here just emphasizes how hard he plays. This is similar to "I love so much" or "John is so fast". "so" is an adverb describing "hard". The sentence tells us that there are two explanations for how ...”
January 16, 2014
Patrick_GMATFix posted a reply to Lyon Mackenzie in the Sentence Correction forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/7251_thumb.png -Patrick”
January 16, 2014
Patrick_GMATFix posted a reply to Teruvian rice in the Critical Reasoning forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8521_thumb.png -Patrick”
January 16, 2014
Patrick_GMATFix posted a reply to Wholesale cereal prices in the Critical Reasoning forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8520_thumb.png -Patrick”
January 16, 2014
Patrick_GMATFix posted a reply to Isaac Newton in the Sentence Correction forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8447_thumb.png -Patrick”
January 16, 2014
Patrick_GMATFix posted a reply to Kensington Rune Stone in the Sentence Correction forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8446_thumb.png -Patrick”
January 16, 2014
Patrick_GMATFix posted a reply to Need help on this CR in the Critical Reasoning forum
“To support an assertion is to strengthen an argument. In short, the right answer should make the conclusion (assertion) more convincing. The conclusion is that the best time to announce a new product is once sales of the current product have begun to decline. This is based on the premise that ...”
January 15, 2014
Patrick_GMATFix posted a reply to Difference between: ... in both... AND ...both in.... in the Sentence Correction forum
“The meaning is the same. The order of words gets tested in relation to parallel structures. The phrases/clauses that follow BOTH must be parallel. Both your sentences follow this rule "both in plants and in animals" and "in both plants and animals" are parallel. An incorrect ...”
January 15, 2014
Patrick_GMATFix posted a reply to Adequate amounts of sleep in the Sentence Correction forum
“Different people have different amounts of sleep. The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8474_thumb.png -Patrick”
January 15, 2014
Patrick_GMATFix posted a reply to Women/Children/Men in the Data Sufficiency forum
“(deleting double-post)”
January 15, 2014
Patrick_GMATFix posted a reply to Women/Children/Men in the Data Sufficiency forum
“This is QID 1175 in the GMATFix Solutions Engine. Written and video explanation can be found here. 1) is not sufficient because all we have are ratio values, no concrete number. We could be dealing with very large numbers of people or small numbers. 2) on its own is not helpful because it ...”
January 15, 2014
Patrick_GMATFix posted a reply to QUANT REVIEW 112 in the Data Sufficiency forum
“In an arithmetic sequence (a sequence of numbers that are evenly spaced), average is always equal to median. The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/6804_thumb.png -Patrick”
January 15, 2014
Patrick_GMATFix posted a reply to Number line intervals in the Data Sufficiency forum
“Think of the length of each interval as a constant (k) and you will be able to derive equations to prove sufficiency from each statement. The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5519_thumb.png -Patrick”
January 15, 2014
Patrick_GMATFix posted a reply to Cartoon frames in the Data Sufficiency forum
“Statement (2) is more about ratios than about rates. The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5517_thumb.png -Patrick”
January 15, 2014
Patrick_GMATFix posted a reply to Cabbage shipments in the Problem Solving forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/4331_thumb.png -Patrick”
January 15, 2014
Patrick_GMATFix posted a reply to square geometry in the Problem Solving forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/4317_thumb.png -Patrick”
January 15, 2014
Patrick_GMATFix posted a reply to Anton Checkhov in the Sentence Correction forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8445_thumb.png -Patrick”
January 15, 2014
Patrick_GMATFix posted a reply to Commercial competition in the Sentence Correction forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8444_thumb.png -Patrick”
January 15, 2014
Patrick_GMATFix posted a reply to Thomasville tree planting in the Critical Reasoning forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8519_thumb.png -Patrick”
January 15, 2014
Patrick_GMATFix posted a reply to Antismoking Petition in the Critical Reasoning forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8518_thumb.png -Patrick”
January 15, 2014
Patrick_GMATFix posted a reply to Cars X and Y speeds in the Data Sufficiency forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5515_thumb.png -Patrick”
January 14, 2014
Patrick_GMATFix posted a reply to Ms Smith's income in the Data Sufficiency forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5513_thumb.png -Patrick”
January 14, 2014
Patrick_GMATFix posted a reply to Brick wall in the Problem Solving forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/4306_thumb.png -Patrick”
January 14, 2014
Patrick_GMATFix posted a reply to Science and physics students in the Problem Solving forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/4297_thumb.png -Patrick”
January 14, 2014
Patrick_GMATFix posted a reply to is rst 1? in the Data Sufficiency forum
“Yes. Each variable has a specific value (that''s why from x^2=1, we don''t know what x is), but two variables can share the same value.”
December 24, 2013
Patrick_GMATFix posted a reply to Integer properties - Any tips to solve this one quickly in the Problem Solving forum
“In general when you are asked to handle factors of big numbers, or to think about the properties of really large numbers, it''s a good idea to break numbers into their prime factors. 270,000,000 = 27 * 10^7 = 3^3 * 2^7 * 5^7 a, b and c are the exponents of 2, 3 and 5 respectively, so a=7, b=3, ...”
December 22, 2013
Patrick_GMATFix posted a reply to Pls help me understand the flaw with the second stmnt in the Problem Solving forum
“In your logic you said that y was the sum of negatives. In that case, the difference between the sum of positives and the sum of negatives should be expressed as the difference between x and y --> x-y. x-(-y) = x+y is really the sum of the sums, not the difference between the sums. Suppose ...”
December 22, 2013
Patrick_GMATFix posted a reply to Probability Again in the Problem Solving forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8384_thumb.png -Patrick”
December 22, 2013
Patrick_GMATFix posted a reply to why this answer choice was considered redundant? in the Sentence Correction forum
“The answer choice you''re referring to (C) can be simplified to say: There is no need to use "would" in front of "be trimmed" but the issue is less redundancy than improper use of the subjunctive mood. The subjunctive mood is used in "If "If you do that again, ...”
December 22, 2013
Patrick_GMATFix posted a reply to Probabilit in the Problem Solving forum
“The two solutions below are taken from the GMATFix App. Solution A http://www.gmatfix.com/video_snap/8344_thumb.png Solution B http://www.gmatfix.com/video_snap/8344_thumb.png -Patrick”
December 22, 2013
Patrick_GMATFix posted a reply to is rst 1? in the Data Sufficiency forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5511_thumb.png -Patrick”
December 22, 2013
Patrick_GMATFix posted a reply to Club members at least 35yrs old in the Data Sufficiency forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/5498_thumb.png -Patrick”
December 22, 2013
Patrick_GMATFix posted a reply to Assembly-line workers payroll in the Problem Solving forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/4295_thumb.png -Patrick”
December 22, 2013
Patrick_GMATFix posted a reply to Contact lenses in the Problem Solving forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/4240_thumb.png -Patrick”
December 22, 2013
Patrick_GMATFix posted a reply to Machine x and y, w widgets in the Problem Solving forum
“This can be solved algebraically, but it gets a bit nasty. I would use reverse engineering: work backwards to find out which of the answer choices fit all restrictions in the question. I''d start by plugging in an easy number for w (here easy means a common factor of our other numbers). In ...”
December 22, 2013
Patrick_GMATFix posted a reply to Mall Occupancy in the Critical Reasoning forum
“The solution below is taken from the GMATFix App. http://www.gmatfix.com/video_snap/8517_thumb.png -Patrick”
December 21, 2013
Patrick_GMATFix posted a reply to Gandania tobacco sales in the Critical Reasoning forum
“The solution below is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/8516_thumb.png -Patrick”
December 21, 2013
Patrick_GMATFix posted a reply to Auto company profits in the Sentence Correction forum
“The solution below is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/8440_thumb.png -Patrick”
December 21, 2013
Patrick_GMATFix posted a reply to Bank fees in the Sentence Correction forum
“The solution below is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/8439_thumb.png -Patrick”
December 21, 2013
Patrick_GMATFix posted a reply to radius of a cylindrical water tank in the Problem Solving forum
“My approach: Multiplying the radius by 1/2 (50% reduction) means the area of the base will be multiplied by 1/4. In other words, the volume of the new cylinder is 1/4 of the old volume. So if speed remained constant, the new time required to fill the cylinder would be 1/4 of the old time. Thus ...”
December 21, 2013
Patrick_GMATFix posted a reply to how many integers less than 20 - brute force? in the Problem Solving forum
“I''d use brute force since the number set is so small that it should take under a minute. The solution below is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/4215_thumb.png -Patrick”
December 21, 2013
Patrick_GMATFix posted a reply to Ms Adams sold properties in the Problem Solving forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/4213_thumb.png -Patrick”
December 21, 2013
Patrick_GMATFix posted a reply to which quadrant has point (a b) in the Data Sufficiency forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/5451_thumb.png -Patrick”
December 21, 2013
Patrick_GMATFix posted a reply to r and s are nonzero integers in the Data Sufficiency forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/4711_thumb.png -Patrick”
December 21, 2013
Patrick_GMATFix posted a reply to Pears in the Data Sufficiency forum
“The weight of pears Pat could have bought for the same amount of money depends on the ratio of prices. For instance, if pears cost 1/2 as much as apples, then Pat could have bought twice as many pounds of Pears(10 pounds) Rephrase: What is the ratio of the price of 1 pound of apples to the price ...”
December 21, 2013
Patrick_GMATFix posted a reply to Pasta in the Data Sufficiency forum
“The prompt tells us that 4 servings require 1.5 cups of pasta, so we know how to convert servings to cups and vice-versa. To find out how many cups he will use, we need to know how many servings he will make. Rephrase: how many servings will he prepare next time? Statement 1: Since we don''t ...”
December 21, 2013
Patrick_GMATFix posted a reply to Office rules in the Critical Reasoning forum
“D is not a great choice because knowing whether most employees are familiar with "some" rules doesn''t help us assess how effective the plan is. > if most employees know some rules, the rules that are put in the newsletter may still be new to them, so the plan can still succeed (or ...”
December 21, 2013
Patrick_GMATFix posted a reply to 99 % species in the Sentence Correction forum
“I disagree with Rahul here. I don''t think B commits an error in meaning because the subordinate clause "that appeared on Earth" can legally describe what comes immediately before it (500m species of living creatures). I have 2 problems with B. 1) verb tense of "to ...”
December 20, 2013
Patrick_GMATFix posted a reply to Which one is correct? - two questions in the Sentence Correction forum
“I agree with Rahul. I think the first sentence can be further improved by implying "than it was" and simply writing "It was much better than expected". Note that without context, the pronoun "It" is problematic because we don''t know what it''s referring to, so this ...”
December 20, 2013
Patrick_GMATFix posted a reply to Physicians in TV Ads in the Critical Reasoning forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/8515_thumb.png -Patrick”
December 20, 2013
Patrick_GMATFix posted a reply to Waterfront development to increase revenue in the Critical Reasoning forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/8514_thumb.png -Patrick”
December 20, 2013
Patrick_GMATFix posted a reply to Contrast India with China in the Sentence Correction forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/8437_thumb.png -Patrick”
December 20, 2013
Patrick_GMATFix posted a reply to Airline's purchases in the Sentence Correction forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/8436_thumb.png -Patrick”
December 20, 2013
Patrick_GMATFix posted a reply to The "greater" ratio in the Problem Solving forum
“A ratio is just a number. A ratio of 2:5 is just 0.4. A greater ratio just means a ratio with a greater numerical value (the result of the fraction).”
December 20, 2013
Patrick_GMATFix posted a reply to Journalists use pictures in the Sentence Correction forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/8435_thumb.png -Patrick”
December 20, 2013
Patrick_GMATFix posted a reply to Barbara McClintock in the Sentence Correction forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/8433_thumb.png -Patrick”
December 20, 2013
Patrick_GMATFix posted a reply to Tenses confusion in the Sentence Correction forum
“"the cake had been baked" is the past perfect tense. The past perfect is constructed with the helper verb "to have" in the past (had) next to the past participle of the main verb. "I had baked the cake" is past perfect. "The cake had been baked" is also ...”
December 20, 2013
Patrick_GMATFix posted a reply to Office rules in the Critical Reasoning forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/8513_thumb.png -Patrick”
December 20, 2013
Patrick_GMATFix posted a reply to Magneticfields and health in the Critical Reasoning forum
“This solution is taken from the GMATFix App. My signature below has more info. https://www.gmatfix.com/video_snap/8512_thumb.png -Patrick”
December 20, 2013
Patrick_GMATFix posted a reply to Raffle tickets and ratios in the Problem Solving forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/4210_thumb.png -Patrick”
December 19, 2013
Patrick_GMATFix posted a reply to Bacteria population in the Problem Solving forum
“This solution is taken from the GMATFix App. My signature below has more info. https://www.gmatfix.com/video_snap/4192_thumb.png -Patrick”
December 19, 2013
Patrick_GMATFix posted a reply to Resolution K female voters in the Data Sufficiency forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/4671_thumb.png -Patrick”
December 19, 2013
Patrick_GMATFix posted a reply to Older people employed in the Data Sufficiency forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/4663_thumb.png -Patrick”
December 19, 2013
Patrick_GMATFix posted a reply to x and y > 0? in the Data Sufficiency forum
“This is QID 1229 in the GMATFix Solutions Engine. A more thorough discussion can be found there. Statement 1 Tells us that x-y = 1/2, so x is bigger than y. All we know is that x is 1/2 to the right of y on the number line. We have no information about signs. (1) is not sufficient ...”
December 12, 2013
Patrick_GMATFix posted a reply to x > 0? in the Data Sufficiency forum
“This is QID 1598 in the GMATFix Solutions Engine. Follow the link for a more thorough discussion. In brief: ax and b must have opposite signs because they add up to 0. We''d like to know whether x > 0. Statement 1 a+b > 0 This gives no restriction whatsoever on the sign of either ...”
December 12, 2013
Patrick_GMATFix posted a reply to Inequality in the Data Sufficiency forum
“This is QID 1241 in the GMATFix Solutions Engine. Follow the link for a more thorough discussion. In short, because mv and pv have the same sign (they''re both < 0), we know that m and p must have the same sign as well. Statement 1 m < p mv < pv can be reduced to m < p by ...”
December 12, 2013
Patrick_GMATFix posted a reply to Percent, speed distance time in the Data Sufficiency forum
“This is QID 1351 in the GMATFix Solutions Engine. Follow the link for a more thorough solution. Basically, we want to know what % of time did Marla gain by speeding up from x to 1.25x mph. Understand that the value of x is irrelevant. What''s important is that she sped up by 25%. Notice that ...”
December 12, 2013
Patrick_GMATFix posted a reply to rectangular coordinate system in the Data Sufficiency forum
“This is QID 1293 in the GMATFix Solutions Engine Statement 1 Remember that lines extend infinitely, so a line with a negative slope will always enter quadrant II (because the line goes up and to the left forever). Such a line, by the way, will always enter quadrant IV (goes down and to the ...”
December 12, 2013
Patrick_GMATFix posted a reply to revolutions per minute in the Problem Solving forum
“This can be solved in about 30 seconds: Because the speeds are constant, the difference between the revolutions of the wheels increases at a constant rate. In one minute, gear Q (40/minute) will have revolved 30 more times than gear P (10/minute). Because 6 is exactly one-fifth of 30, it will ...”
December 12, 2013
Patrick_GMATFix posted a reply to machines work problem (i never get these right) in the Problem Solving forum
“Approach 1: Since Work done = #_of_Machines * Rate * Time, we can say that the amount of work done by 6 machines over 12 days is 6 * r * 12 days = 72r. If we have only 8 days to do the job, the equation becomes x * r * 8 = 72r where x is the number of machines. x=9 machines, so we need an ...”
December 12, 2013
Patrick_GMATFix posted a reply to less than 1? in the Problem Solving forum
“I would use a combination of logic and plugin to do this in about 45 seconds. I. r/s is (smaller positive)/(bigger positive). The result will always be a positive proper fraction (a value between 0 and 1). I must be less than 1. II. (0.0001)*(1.01) is less than 1 (almost zero), but ...”
December 12, 2013
Patrick_GMATFix posted a reply to Accuracy 74% in the Critical Reasoning forum
“Hey Suheb, I''m afraid without more info I can''t give you an exact answer. This is a pretty open-ended question. Whether 74% is good depends on your target score, on how the percentages break down across difficulties (eg 74% accuracy on very difficult questions is much better than on very ...”
December 12, 2013
Patrick_GMATFix posted a reply to Paper and Plastic bags in the Critical Reasoning forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/8511_thumb.png -Patrick”
December 12, 2013
Patrick_GMATFix posted a reply to Emmer wheat in the Critical Reasoning forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/8505_thumb.png -Patrick”
December 12, 2013
Patrick_GMATFix posted a reply to Pronouns- Using '-self' or '-selves' in the Sentence Correction forum
“Hey Bharat, These are reflexive pronouns. They are typically used in two ways: 1) When the subject of the verb does and also receives an action Example 1: I made myself sick by drinking spoiled milk. In this case the subject "I", is also the recipient of the action (I did something ...”
December 12, 2013
Patrick_GMATFix posted a reply to Himalayan glacier in the Sentence Correction forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/8429_thumb.png -Patrick”
December 12, 2013
Patrick_GMATFix posted a reply to Columbian artifacts in the Sentence Correction forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/8428_thumb.png -Patrick”
December 12, 2013
Patrick_GMATFix posted a reply to More than the 50 plants in her yard in the Sentence Correction forum
“Either option "the 50 plants" vs "50 plants" would be grammatically correct. They have slightly different implications however, so one sentence could be better than the other depending on what the author is trying to convey. "the" is used to refer to an exact or ...”
December 12, 2013
December 11, 2013
Patrick_GMATFix posted a reply to percentages in the Problem Solving forum
“income = wage * time. Increasing w by 25% makes the new wage 5/4 * w. To offset this change and ensure that income (w * t) remains steady, multiply t by the inverse of 5/4, so that the new time will be 4/5 * t, and the new income = the old income: 5/4 * w * 4/5 * t = w * t. The change in time (4/5) ...”
December 11, 2013
Patrick_GMATFix posted a reply to Confusion in Combinatorics methods--Kaplann,Manhattan--HELP! in the Problem Solving forum
“Danny you''re almost there. You found out that there are 48 ways to seat all 6 people once J and M are in two adjacent seats, but forgot to account for the pairs of seats they can be adjacent in. There are 6 seats, so J&M could be next to each other in seats {1,2}, {2,3}, {3,4}, {4,5} or ...”
December 11, 2013
Patrick_GMATFix posted a reply to Combinations 600 level problem..Please help in the Problem Solving forum
“Stuart''s answer is phenomenal! My approach took about 2 minutes to execute: If Joey is first, Frankie and the rest can stand however they want in spots 2-6 --> 5! ways. If Joey is 2nd, the others can stand however they want (5!) but get rid of the portion of those arrangements that have ...”
December 11, 2013
Patrick_GMATFix posted a reply to Class of boys & girls in the Problem Solving forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/4173_thumb.png -Patrick”
December 11, 2013
Patrick_GMATFix posted a reply to Domestic cars in the Problem Solving forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/4187_thumb.png -Patrick”
December 11, 2013
Patrick_GMATFix posted a reply to Swim club in the Data Sufficiency forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/4608_thumb.png -Patrick”
December 11, 2013
Patrick_GMATFix posted a reply to Chan and Mieko in the Data Sufficiency forum
“This solution is taken from the GMATFix App. My signature below has more info. http://www.gmatfix.com/video_snap/4603_thumb.png -Patrick”
December 11, 2013
Patrick_GMATFix posted a reply to Compound interest in the Problem Solving forum
“Hope this helps. My signature below has more info. http://snag.gy/Vf8CC.jpg -Patrick”
December 10, 2013
Patrick_GMATFix posted a reply to Coins in pockets in the Problem Solving forum
“Hope this helps. My signature below has more info. http://snag.gy/iBYqE.jpg -Patrick”
December 10, 2013
Patrick_GMATFix posted a reply to Female employes in X in the Data Sufficiency forum
“Hope this helps. My signature below has more info. http://snag.gy/cls48.jpg -Patrick”
December 10, 2013
Patrick_GMATFix posted a reply to Is 2^x greater than 100? in the Data Sufficiency forum
“Hope this helps. My signature below has more info. https://snag.gy/XcvzS.jpg -Patrick”
December 10, 2013
Patrick_GMATFix posted a reply to Planet venus in the Sentence Correction forum
“Hope this helps. My signature below has more info. http://snag.gy/k6tNW.jpg -Patrick”
December 10, 2013
Patrick_GMATFix posted a reply to Military governors in the Sentence Correction forum
“Hope this helps. My signature below has more info. http://snag.gy/CBj4t.jpg -Patrick”
December 10, 2013
Patrick_GMATFix posted a reply to Car accidents in the Critical Reasoning forum
“Hope this helps. My signature below has more info. http://snag.gy/6ZiFY.jpg -Patrick”
December 10, 2013
Patrick_GMATFix posted a reply to Stock analyst in the Critical Reasoning forum
“https://snag.gy/tFyPw.jpg Hope this helps. My signature below has more info. -Patrick”
December 10, 2013
Patrick_GMATFix posted a reply to Standard deviation - MGMAT CAT 3 in the Data Sufficiency forum
“The GMAT doesn''t expect you to know how to calculate standard deviation (SD), but it does expect you to know what''s needed to calculate it. SD is the average of the distances between the mean of a set and all the values in the set. In other words, if we ever have enough data to find all these ...”
December 10, 2013
Patrick_GMATFix posted a reply to Basic Adverb Question in the Sentence Correction forum
“I was pretty sure your source made a mistake. I thought "lively" could be used not only as an adjective, but also as an adverb. Still, I presumed that whoever wrote the lesson you''re studying looked into it so I did as well and I have conflicting results. Dictionary.com lists the word ...”
December 10, 2013
Patrick_GMATFix posted a reply to computer memory chips in the Sentence Correction forum
“Let''s throw out some junk and simplify the sentence as follows: We can use 2 splits to solve this quickly. Split #1 "As the lines have become thinner and the circuits more complex" (answers A, B) "As the lines have become thinner and circuits are more complex" ...”
December 10, 2013
Patrick_GMATFix posted a reply to Paper Print in the Critical Reasoning forum
“Video Solution: http://snag.gy/dpTpc.jpg Hope this helps. My signature below has more info. -Patrick”
December 10, 2013
Patrick_GMATFix posted a reply to Plant Scientists in the Critical Reasoning forum
“Video Solution: http://snag.gy/VmUTp.jpg Hope this helps. My signature below has more info. -Patrick”
December 10, 2013
Patrick_GMATFix posted a reply to arachnids in the Sentence Correction forum
“This tests modifier errors. First, to make sense of the sentence, ignore everything from "which have" to "their bodies". The original sentence becomes: "Unlike x, y" is a direct comparison in which x and y must be comparable. In this case, answer (A) is ...”
December 10, 2013
Patrick_GMATFix posted a reply to Capsaicin in the Sentence Correction forum
“Video Solution: http://snag.gy/LgKCF.jpg Hope this helps. My signature below has more info. -Patrick”
December 10, 2013
Patrick_GMATFix posted a reply to Glaciers form through evaporation in the Sentence Correction forum
“Video Solution: http://snag.gy/WYfgQ.jpg Hope this helps. Read my signature below for more. -Patrick”
December 10, 2013
Patrick_GMATFix posted a reply to inequality in the Data Sufficiency forum
“Makes sense.”
December 9, 2013
Patrick_GMATFix posted a reply to inequality in the Data Sufficiency forum
“Unless I''m missing something, there is a problem with the question as you posted it. As written, the statements do not give us enough information, even when combined so the official answer should not be what you indicated. Statement 1 Simplify (1) by dividing both sides by a. If a is positive, ...”
December 9, 2013
Patrick_GMATFix posted a reply to Race runners in the Data Sufficiency forum
“Video Solution: http://snag.gy/BLCCr.jpg Hope this helps. Read my signature below for more -Patrick”
December 9, 2013
Patrick_GMATFix posted a reply to Lincoln Library in the Data Sufficiency forum
“Video Solution: http://snag.gy/Xa2XV.jpg Hope this helps. Read my signature below for more -Patrick”
December 9, 2013
Patrick_GMATFix posted a reply to Bob & Yolanda in the Problem Solving forum
“Video Solution: http://snag.gy/pzYSR.jpg Hope that helps; more info in my signature below, -Patrick”
December 9, 2013
Patrick_GMATFix posted a reply to Stadium tickets in the Problem Solving forum
“Hey Lula, Video solution: http://snag.gy/FxzGW.jpg Hope that helps, -Patrick”
December 9, 2013
Patrick_GMATFix posted a reply to integers in the Problem Solving forum
“two numbers have an even product if and only if at least one of them is even. So if one of the numbers is odd, the other one must be even. That is why E must be true. A would be false if both numbers were negative. B would be false if both numbers were equal to square root of 400. C would ...”
December 9, 2013
Patrick_GMATFix posted a reply to My Thank You to BTG: GMATFix License Give-Away in the GMAT Strategy forum
“Check out my signature Amir ;-)”
November 28, 2013
Patrick_GMATFix posted a reply to My Thank You to BTG: GMATFix License Give-Away in the GMAT Strategy forum
“Hi Amir, Yes and Yes :-) Please restart the App and you should be ready to go. -Patrick”
November 25, 2013
Patrick_GMATFix posted a reply to My Thank You to BTG: GMATFix License Give-Away in the GMAT Strategy forum
“Hey Sri, I am unable to replicate this error; could a firewall or other security be preventing the software from getting online? Within the GMATFix App, hit the "Feedback" button to send me more details about the problem you''re having including any error message. ...”
November 17, 2013
Patrick_GMATFix posted a reply to My Thank You to BTG: GMATFix License Give-Away in the GMAT Strategy forum
“You''re welcome Sunil”
November 14, 2013
Patrick_GMATFix posted a reply to Time & Work in the Problem Solving forum
“Tough question, but can be solved easily, without much math. http://snag.gy/NbIBg.jpg -Patrick”
November 10, 2013
Patrick_GMATFix posted a reply to Seating arrangement in the Problem Solving forum
“Video Solution http://snag.gy/o2InL.jpg -Patrick”
November 10, 2013
Patrick_GMATFix posted a reply to 8 games and maximum points in the Data Sufficiency forum
“Video Solution http://snag.gy/Wa7RK.jpg -Patrick”
November 10, 2013
Patrick_GMATFix posted a reply to My Thank You to BTG: GMATFix License Give-Away in the GMAT Strategy forum
“Sunill, next time you start the App, it will be licensed. Get the Self-Study PDF guide on my site for instructions on how to make the most of the software. Enjoy, -Patrick”
November 10, 2013
Patrick_GMATFix posted a reply to A and S in the Problem Solving forum
“Video Solution http://snag.gy/OK4Ct.jpg -Patrick”
November 10, 2013
Patrick_GMATFix posted a reply to My Thank You to BTG: GMATFix License Give-Away in the GMAT Strategy forum
“You''re all set Sri Got you covered Kevin!”
November 8, 2013
Patrick_GMATFix posted a reply to Seconds taken to catch up in the Problem Solving forum
“The question is a bit ambiguous. when I first read it, I had the same interpretation as you Sri. Under that interpretation, your logic and answer are correct. However, a "36 meter head start" in this case simply means that Nicky starts 36 meters ahead and they start the race at the same ...”
November 7, 2013
Patrick_GMATFix posted a reply to Seconds taken to catch up in the Problem Solving forum
“An alternative approach uses the Distance = Rate x Time formula. If we call t the span of time spent running, Chris'' distance will the product of her rate and time, or 5t (note that since 5 is in meters per second, t must be in seconds). Likewise, Nicky''s distance will be the product of her rate ...”
November 7, 2013
Patrick_GMATFix posted a reply to OG 13 DS 68 in the Data Sufficiency forum
“Zeallous, I don''t think I understand the problem you''re having. When you write (k+m+p)/24, what do k, m and p represent? Two concepts are needed to solve this algebraically 1) Rate is always the inverse of the time it takes to do 1 job. For instance if I take 5 days to do a job, then my rate ...”
November 7, 2013
Patrick_GMATFix posted a reply to Time taken by 2 drivers in the Problem Solving forum
“You''re welcome Sri :-) If you found my explanation helpful, checkout this discussion on the BTG Strategy forum. -Patrick”
November 7, 2013
Patrick_GMATFix posted a reply to Time taken by 2 drivers in the Problem Solving forum
“You got stuck because there are two problems with your logic. 1) "t" represents a span of time but in your explanation you call it "current time". If Sam travels at 80 m/hr, then 80t is the distance Sam covers over t hours.2) 80t = 80t + 20 can never be right no matter what ...”
November 6, 2013
Patrick_GMATFix posted a reply to blank in the Problem Solving forum
“sgr21, If you are seriously preparing for the GMAT, I strongly suggest that you work with official GMAT questions. 3rd party questions vary in quality, and the source of this question is particularly poor if it intends to simulate GMAT Quant. 3rd Party content has its place, in particular in ...”
November 6, 2013
Patrick_GMATFix posted a reply to A clothing store's revenue last May was 6 in the Data Sufficiency forum
“In DS, my approach is to try solving in the following order 1) Logical Reasoning 2) Algebra 3) Plug-In/Test Values Here we can reason our way to the answer.Revenue dropped 6% Store was profitable each month. Since revenue went down, we expect profit to go down unless expenses decreased even ...”
November 6, 2013
Patrick_GMATFix posted a reply to Worst case Scenario Problem in the Problem Solving forum
“Doesn''t sound like it could be an official GMAT Q because 1) question doesn''t specify whether a sock can go on either foot. If LEFT and RIGHT feet''s socks are different, then I could pull out 10 socks (say all left footed socks) without completing a pair) 2) second question is ambiguous as ...”
November 6, 2013
Patrick_GMATFix posted a reply to My Thank You to BTG: GMATFix License Give-Away in the GMAT Strategy forum
“You''re welcome; enjoy.”
November 5, 2013