Author: Scott Woodbury-Stewart

GMAT OFFICIAL GUIDE PS Solution: We are given that square X and rectangle Y were created with 8 identical triangles. Let’s sketch the figures below. We use the fact …

GMAT OFFICIAL GUIDE PS Solution: We are given the following constraints for a 3-digit code: The first number cannot be 0 or 1, the second digit must be 0 …

GMAT OFFICIAL GUIDE PS Solution: We are given that x and y are positive numbers and that x + y = 1. We must determine possible values of 100x …

GMAT OFFICIAL GUIDE PS Solution: We are given that at t hours past 2:00 a.m., the depth of the water in a tank is determined by the formula N(t)= …

GMAT OFFICIAL GUIDE PS Solution: We must determine the sum of the consecutive integers from -25 to 23, inclusive. To determine the sum we can use the formula sum …

GMAT OFFICIAL GUIDE PS Solution: Looking at the given number line, we see that point R is to the left of zero and points S and T are to …

GMAT Guide Solution: We first need to determine the volume of each individual cheese ball. We have 3 cheese balls of diameters of 2, 4, and 6 inches, respectively. …

GMAT OFFICIAL GUIDE PS Solution: The cost to remove 90 percent of the pollutant is determined by letting p = 90 in the cost formula: 100,000(90)/(100 – 90) = …