Author: Scott Woodbury-Stewart

GMAT OFFICIAL GUIDE DS Solution: We must determine whether x = 1/y. Statement One Alone:  xy = 1 Manipulating the equation in statement one by dividing both sides by …

GMAT OFFICIAL GUIDE DS Solution: Out of three houses being sold, we must determine the asking price for the 2nd most expensive house. Let’s use variables of a, b, …

GMAT OFFICIAL GUIDE DS Solution: We are asked to determine the value of 10 percent of y. Putting “10 percent of y” into a mathematical expression we have: 0.1y= …

GMAT OFFICIAL GUIDE DS Solution: We are given that there are red, white, and blue marbles in a jar. Thus, we can create the following probability equation: P(red) + …

GMAT OFFICIAL GUIDE PS – Solution: We can begin by defining two variables: x = the number of liters of 2 percent solution y = the number of liters …

GMAT OFFICIAL GUIDE PS Solution: We start by determining the new value of the x dollars Alex deposited into his account that earned 8 percent annual interest. At the …

GMAT OFFICIAL GUIDE PS Solution: We are given that 60% of those who receive a questionnaire will respond. We must determine how many questionnaires need to be mailed to …

GMAT OFFICIAL GUIDE PS – Solution: We are given the diagram of a shaded portion of a circular ring. Let’s sketch and label the diagram. As seen below, we …