Author: Scott Woodbury-Stewart

GMAT OFFICIAL GUIDE DS Solution: We are given that a tunnel in the shape of a semicircle has a radius of 4.2 meters. Since it has a radius of …

GMAT OFFICIAL GUIDE DS Solution: We are given that in each of the last five years, Company K donated p percent of its annual profits to a certain scholarship …

GMAT OFFICIAL GUIDE DS – Solution: We need to determine whether w+h^4 is positive. First, we know that h^4 is always non-negative. Let’s look at the 2 possibilities for …

GMAT OFFICIAL GUIDE DS Solution: We need to determine the value of t. Statement One Alone: s + t = 6 + s We can subtract s from both …

GMAT OFFICIAL GUIDE DS Solution: We need to determine the value of z in the following diagram: Note that z is equal to the length of the rectangle and …

GMAT OFFICIAL GUIDE PS Solution: This is a permutation problem, because the order of the letters matters. Let’s first determine how many ways we can arrange the letters. Since …

GMAT OFFICIAL GUIDE PS Solution: Since we need to determine the probability that Malachi will return home at the end of the day on the following Monday, we must …

GMAT OFFICIAL GUIDE PS Solution: We are given that a certain experimental mathematics program was tried out in 2 classes in each of 32 elementary schools and involved 37 …