Search found 18 matches
(E) In an area devoid of volcanic activity, a team of scientists from the University of California has made the discovery of a fragment of the Swiss Alps that had seemingly come from a depth as far as 415 miles. 1. Is the Past Perfect of " Had come " correctly used in this sentence? 2. Is...
- by AndreiGMAT
Sat Aug 20, 2016 8:55 pm- Forum: Sentence Correction
- Topic: In an area devoid of volcanic activity
- Replies: 7
- Views: 3988
Hi Rich.C@EMPOWERgmat,
Thank you for the clear explanation. Can the problem be solved using algebraic way?
- by AndreiGMAT
Tue Jul 19, 2016 1:35 pm- Forum: Data Sufficiency
- Topic: Is xy>x/y?
- Replies: 9
- Views: 15428
- by AndreiGMAT
Tue Jul 19, 2016 6:53 am- Forum: Data Sufficiency
- Topic: Is xy>x/y?
- Replies: 9
- Views: 15428
Matt, thank you for reply.
I need to choose specifically "Weighted Averages" questions level 600-700 on this forum. If anyone can help me how to filter the questions on this forum , I will appreciate.
Thanks
- by AndreiGMAT
Wed Jun 08, 2016 12:03 am- Forum: Problem Solving
- Topic: Percentage Problem
- Replies: 31
- Views: 18057
How to get to the drill for the selected topics for GMATPatrick_GMATFix wrote:Hi askaichin
To practice weighted avg questions in timed drills, set topic='Weighted Averages' and difficulty='600-700 & 700+' in the Drill Generator
- by AndreiGMAT
Tue Jun 07, 2016 6:57 pm- Forum: Problem Solving
- Topic: Percentage Problem
- Replies: 31
- Views: 18057
- by AndreiGMAT
Wed Jun 01, 2016 7:34 am- Forum: Problem Solving
- Topic: Sum of Integers (really annoying)
- Replies: 7
- Views: 3390
Mitch, that is surely an interesting approach. Thank you. But why "traditional" method doesn't work for me here? My way of thinking: a1 = 1/2 a100 = 1/10100 Number of integers = 100 Average = 5051/20200 Sum = (5051/20200)*100 = 5051/202 This method always worked with integers for me before...
- by AndreiGMAT
Wed Jun 01, 2016 7:00 am- Forum: Problem Solving
- Topic: Sum of Integers (really annoying)
- Replies: 7
- Views: 3390
Sum of Integers (really annoying)
From the Prep Exam Pack 5. Every time I end up with a wrong answer: 5051/202, which is far far from the right answer. Please, explain.
- by AndreiGMAT
Wed Jun 01, 2016 6:13 am- Forum: Problem Solving
- Topic: Sum of Integers (really annoying)
- Replies: 7
- Views: 3390
GMATGuruNY, this is a very good explanation that made it clear for me. Thanks.
Please note that 295 is the UPPER LIMIT.
Any value below 295 -- even 294.999 -- is rounded DOWN to 290.
- by AndreiGMAT
Mon May 02, 2016 4:30 am- Forum: Problem Solving
- Topic: Rounding numbers - OG has mistake?
- Replies: 8
- Views: 2532
Rounding numbers - OG has mistake?
On a recent trip, Cindy drove her car 290 miles, rounded to the nearest 10 miles, and used 12 gallons of gasoline, rounded to the nearest gallon. The actual number of miles per gallon that Cindy's car got on this trip must have been between http://s32.postimg.org/wknlxi74x/answers.jpg Here is explan...
- by AndreiGMAT
Sun May 01, 2016 11:20 pm- Forum: Problem Solving
- Topic: Rounding numbers - OG has mistake?
- Replies: 8
- Views: 2532
Consecutive integers - complicated
If Q is an odd number and the median of Q consecutive integers is 120, what is the largest of these integers?
(A) (Q-1)/2+120
(B) Q/2+119
(C) Q/2+120
(D) (Q+119)/2
(E) (Q + 120)/2
I have no clue what this question is stating or asking and how to interpret the information.
Please, help
- by AndreiGMAT
Sun May 01, 2016 5:38 pm- Forum: Problem Solving
- Topic: Consecutive integers - complicated
- Replies: 4
- Views: 5784
Statistics Question with Image explanation
A certain characteristic in a large population has a distribution that is symmetric about the mean m. If 68 percent of the distribution lies within one standard deviation d of the mean, what percent of the distribution is less than m + d? Answer: [spoiler]84%[/spoiler] I don't quite understand 100% ...
- by AndreiGMAT
Sun May 01, 2016 4:05 pm- Forum: Problem Solving
- Topic: Statistics Question with Image explanation
- Replies: 1
- Views: 1018
GMATGuruNY
You are so to the point!
The questions says: Xavier AND Yvonne, but not Zelda, not Xavier OR Yvonne.
- by AndreiGMAT
Thu Apr 28, 2016 12:32 am- Forum: Problem Solving
- Topic: Probability - What's Wrong?
- Replies: 6
- Views: 2194
Probability - What's Wrong?
Xavier, Yvonne, and Zelda each try independently to solve a problem. If their individual probabilities for success are 1/4, 1/2 and 5/8, respectively, what is the probability that Xavier and Yvonne, but not Zelda, will solve the problem? (A) 11/8, (B) 7/8, (C) 9/64, (D) 5/64, (E) 3/64 My flawed solu...
- by AndreiGMAT
Wed Apr 27, 2016 10:42 pm- Forum: Problem Solving
- Topic: Probability - What's Wrong?
- Replies: 6
- Views: 2194
Issue with wording
Plz help to interpret the wording from OG Review. A closed cylindrical tank contains 36Ï€ cubic feet of water and is filled to half its capacity. When the tank is placed upright on its circular base on level ground, the height of the water in the tank is 2 feet. When the tank is placed on its side o...
- by AndreiGMAT
Mon Apr 25, 2016 3:36 am- Forum: Problem Solving
- Topic: Issue with wording
- Replies: 2
- Views: 1019