Author: Jeff Miller

GMAT OFFICIAL GUIDE PS Solution: For the sixth term, we need to substitute 6 for n, and for the fifth term, we need to substitute 5 for n. Then …

GMAT OFFICIAL GUIDE PS Solution: For this we can setup a table with 2 main categories: years of experience and degrees. These can be broken down further into: 1) …

GMAT OFFICIAL GUIDE PS Solution: We are given that a dealer ordered 60 cameras to be sold for $250 each. This is a 20% markup over the initial cost …

Of the 300 subjects who participated in an experiment using… Solution: This is a 3-circle Venn Diagram problem. Because we do not know the number of unique items in …

GMAT OFFICIAL GUIDE PS Solution: We can solve this problem by translating the given information into math equations. We are first given that the positive integer n is divisible …

GMAT OFFICIAL GUIDE PS Solution: We start by prime factoring 7,150. 7,150 = 715 x 10 = 143 x 5 x 10 At this point we must be careful. …

GMAT OFFICIAL GUIDE PS Solution: Although a formula is provided in this problem, we can easily solve it using a different formula: sum = (average)(quantity) Let’s first determine the …

GMAT OFFICIAL GUIDE PS Solution: Since actually dividing 1/(2^3*5^7) would be time consuming, we want to manipulate d so that we are working with a cleaner denominator. The easiest …