Working simultaneously at their respective constant rates, Machine A…
May 6, 2015
GMAT OFFICIAL GUIDE PS Solution: This problem is what we would call a combined worker problem, where Work (of machine 1) + Work (of machine 2) = Total Work …
Category: Official Guide Solutions
M is the sum of the reciprocals of the consecutive integers…
May 6, 2015
GMAT OFFICIAL GUIDE PS Solution: Let’s first analyze the question. We are trying to find a potential range for M, and M is equal to the sum of the …
After driving to a riverfront parking lot, Bob plans to run…
May 6, 2015
GMAT OFFICIAL GUIDE PS Solution: We are given that Bob plans to run south along the river, turn around, and return to where he started. We can draw this …
If n = 20! + 17, then n is divisible by which of the following
May 6, 2015
GMAT OFFICIAL GUIDE PS Solution: We are given that n = 20! + 17 and need to know whether n is divisible by 15, 17, and/or 19. To determine …
At least 2/3 of the 40 members of a committee must vote in
May 6, 2015
GMAT OFFICIAL GUIDE PS Solution: This problem tests our understanding of fractions. Any time we see a fraction on the GMAT there is a good chance that they will …
If p/q < 1, and p and q are positive integers, which of the…
May 6, 2015
GMAT OFFICIAL GUIDE PS Solution: To more easily solve this problem we can inscribe triangle ABC in a circle. Remember that a circle has a total of 360 degrees. …
A gym class can be divided into 8 teams…
May 6, 2015
GMAT OFFICIAL GUIDE PS Solution: We are given that a gym class can be divided into 8 teams or 12 teams, with an equal number of players on each …
Yesterday’s closing prices of 2,420 different stocks listed…
May 6, 2015
GMAT OFFICIAL GUIDE PS Solution: Although this problem may seem wordy it is actually a pretty basic word problem. We are asked to determine the number of stocks that …