Author: Jeff Miller
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 …
GMAT OFFICIAL GUIDE PS Solution: To solve we can setup a proportion. The proportion will read: A time of 8 hours is to filling up 3/5 of the pool …
GMAT OFFICIAL GUIDE PS Solution: To solve this problem it’s easier to refer to a diagram of what is provided in the problem stem. In creating the diagram we …
GMAT OFFICIAL GUIDE PS Solution: This problem can be solved by using a Rate-Time-Distance table. We are given that Francine traveled x percent of the distance at a rate …
GMAT OFFICIAL GUIDE PS Solution: Let’s first set up the pattern of Nancy’s savings. The first week she saved $1, the second week she saved $2, the third week …
