Mary persuaded n friends to donate $500 each to her election…
May 4, 2016
GMAT OFFICIAL GUIDE DS – Solution: Mary persuaded n friends to donate $500 each to her election campaign, and then each of these n friends persuaded n more people …
Tag: Official Guide for GMAT Review 2015
In a survey of 200 college graduates, 30 percent said they…
April 28, 2016
GMAT OFFICIAL GUIDE DS Solution: The easiest way to solve this problem is to set up a double set matrix. In our matrix we have two main categories: student …
How do I motivate myself to do well in the GMAT?
April 28, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that a group of men and woman at a company received an average score of 80 on a test. We must …
Of the four numbers represented on the number line above, is
April 28, 2016
GMAT OFFICIAL GUIDE DS – Solution: Let’s begin by sketching the number line. We need to determine whether r is closest to zero. Statement One Alone: q = -s …
Three machines, K, M, and P, working simultaneously and…
April 28, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that machines K, M, and P, working simultaneously and independently at their respective constant rates, can complete a certain task in 24 minutes. …
What is the value of the integer n? (1) n(n + 2) = 15 (2)…
April 28, 2016
GMAT OFFICIAL GUIDE DS Solution: We need to determine the value of integer n. Statement One Alone: n(n+1) = 6 Let’s solve the equation: n(n+1) = 6 n^2 + …
What is the total number of coins that Bert and Claire have?
April 28, 2016
GMAT OFFICIAL GUIDE DS Solution: We need to determine the total number of coins that Bert and Claire have. Let’s define two variables. b = the number of coins …
How many integers are there between but not including integers r and s…
April 28, 2016
GMAT OFFICIAL GUIDE DS Solution: We need to determine how many integers are between, but not including, r and s. To find the number of integers between two integers …