Search found 10392 matches


Re: Unable to proceed after calculating x. Help.

Hi All, We’re told that the interior of a rectangular carton holds a volume of X cubic feet and the ratio of Length : Width : Height = 3 : 2 : 2. We’re asked which of the 5 answers is equal to the HEIGHT in feet. While the answers to this question “look scary”, we can answer this question rather han...

by [email protected]

Thu Apr 22, 2021 2:35 pm
Forum: Problem Solving
Topic: Unable to proceed after calculating x. Help.
Replies: 6
Views: 1959

Re: Figures X and Y above (OG2016)

Hi All, This prompt shows us two shapes (a square and a rectangle) that were made up using 8 IDENTICAL triangles. We’re asked for the ratio of the PERIMETER of the square to the PERIMETER of the rectangle. It’s worth noting that the 4 sides of the square are the HYPOTENEUSE of the triangles and the ...

by [email protected]

Thu Apr 22, 2021 2:35 pm
Forum: Problem Solving
Topic: Figures X and Y above (OG2016)
Replies: 4
Views: 3862

Re: What does x =? Helpp!

Hi All, This question gives us a couple of Quadratic equations that have already been factored: (X)(2X + 1) = 0 and (X + ½)(2X – 3) = 0 We’re asked when X equals. This is a standard mid-level Algebra prompt that has already done half the work for us, so we just need to calculate the two values of X ...

by [email protected]

Thu Apr 22, 2021 2:34 pm
Forum: Problem Solving
Topic: What does x =? Helpp!
Replies: 7
Views: 2306

Re: OG For each student in a certain class, a teacher adjusted

Hi All, We’re told that a teacher adjusts each of the student’s test scores according to the formula Y = (0.8)(X) + 20 where X is the ORIGINAL score and Y is the ADJUSTED score. We’re told that the ORIGINAL Standard Deviation of the scores was 20. We’re asked for the Standard Deviation of the new (a...


Re: If there are fewer than 8 zeroes

Hi All, We’re told that there are FEWER than 8 zeroes between the decimal point and the first NON-ZERO digit when converting (T/1000)^4 to a decimal. We’re asked which of the following 3 numbers could be the value of T. While this question looks a bit complicated, it’s based on some standard multipl...

by [email protected]

Thu Apr 22, 2021 2:32 pm
Forum: Problem Solving
Topic: If there are fewer than 8 zeroes
Replies: 12
Views: 6018

Re: OG-17

Hi All, This prompt tells us three Probability-based pieces of information: 1) The probability that Event M will NOT occur is 0.8 2) The probability that Even R will NOT occur is 0.6 3) Events M and R CANNOT BOTH occur. We’re asked for the probability that Event M OR Event R will occur. While these ...

by [email protected]

Thu Apr 22, 2021 2:32 pm
Forum: Problem Solving
Topic: OG-17
Replies: 5
Views: 3186

Re: Help on Geometry Problem - OG 13 - PS#75

Hi All, We’re given an EQUILATERAL triangle – with the three points of the triangle equidistant from the ‘center’ point P. We’re asked to rotate the triangle CLOCKWISE and we are asked how many degrees it would take for Point B (re: the top of the triangle) to get to where Point A is (the lower-left...

by [email protected]

Wed Apr 21, 2021 8:09 pm
Forum: Problem Solving
Topic: Help on Geometry Problem - OG 13 - PS#75
Replies: 8
Views: 4350

Re: For a party, three solid cheese (OG2016)

Hi All, We’re told that 3 solid cheese ball spheres with DIAMETERS of 2 inches, 4 inches and 6 inches are going to be combined into one larger sphere. We’re asked for the approximate DIAMETER of that sphere in inches. While a sphere is a really rare shape on the GMAT (you likely won’t have to deal w...

by [email protected]

Wed Apr 21, 2021 8:08 pm
Forum: Problem Solving
Topic: For a party, three solid cheese (OG2016)
Replies: 4
Views: 3290

Re: rate problem

Hi All, This prompt starts by telling us that three printing presses (R, S and T) can complete a job TOGETHER in 4 hours. This first sentence implies that we’re dealing with a “Work Formula” question – and there are a couple of different ways to go about solving these types of prompts. We’re then to...

by [email protected]

Wed Apr 21, 2021 8:07 pm
Forum: Problem Solving
Topic: rate problem
Replies: 5
Views: 4519

Re: Q.65 Problem Solving GMAT Review 13th Edition

Hi All, Here, we’re told that the distance between the Sun and a planet is 2.3 x 10^14 INCHES. We’re asked which answer is closest to that distance in KILOMETERS. This is just a ‘unit conversion’ question (and the prompt tells us that 1 km = 3.9 x 10^4 inches), so we just have to keep track of the d...

by [email protected]

Wed Apr 21, 2021 8:07 pm
Forum: Problem Solving
Topic: Q.65 Problem Solving GMAT Review 13th Edition
Replies: 6
Views: 4539

Re: #60 Official Guide

Hi All, This question is really wordy – and gives us a lot of information to keep track of - but it gives us that information in a logical order, so we just have to be diligent about taking notes and we can get everyone on our note-pad in one read-through. We’re told: 1) On the 1st day, Orangeade is...

by [email protected]

Wed Apr 21, 2021 8:06 pm
Forum: Problem Solving
Topic: #60 Official Guide
Replies: 5
Views: 4898

Re: In the figure shown, the triangle

Hi All, In this prompt, we are told that a triangle is INSCRIBED in a semi-circle (which means that all 3 points of the triangle are ON the circumference of the half-circle) – and we are given the lengths of the two shorter sides of the triangle (6 and 8). We’re asked for the ARC LENGTH of the semi-...

by [email protected]

Wed Apr 21, 2021 8:05 pm
Forum: Problem Solving
Topic: In the figure shown, the triangle
Replies: 3
Views: 4010

Re: If a( a + 2) = 24

Hi All, This prompt gives us two equations to work with: A(A+2) = 24 B(B+2) = 24 And we’re told that A is NOT equal to B. We’re asked for the sum of A+B. At first glance, the two equations appear to be identical (meaning that A would equal B). However, since we’re told that those two values are NOT ...

by [email protected]

Tue Apr 20, 2021 8:35 pm
Forum: Problem Solving
Topic: If a( a + 2) = 24
Replies: 2
Views: 1710

Re: OG 16 Question 67

Hi All, We’re told that K is an integer and that (.0025)(.025)(.00025)(10^K) is an INTEGER. We’re asked for the least possible value of K. Since we’re given a lot of numbers to work with, this is essentially just an Arithmetic question – but you might find the work much faster to deal with depending...

by [email protected]

Tue Apr 20, 2021 8:35 pm
Forum: Problem Solving
Topic: OG 16 Question 67
Replies: 9
Views: 4510

Re: If x/y = c/d and

Hi All, While this Roman Numeral question looks a bit complicated, it just involves comparing fractions, so we can use basic Arithmetic rules to answer it (and you can solve it Algebraically or by TESTing VALUES.) To start, you should notice that C/D and D/C appear in the two equations – meaning tha...

by [email protected]

Tue Apr 20, 2021 8:34 pm
Forum: Problem Solving
Topic: If x/y = c/d and
Replies: 3
Views: 2303