Author: Scott Woodbury-Stewart

GMAT OFFICIAL GUIDE DS Solution: We are given that Hannah invested $5,000 at x percent simple annual interest and invested another amount at y percent simple annual interest. We …

GMAT OFFICIAL GUIDE DS Solution: We need to determine the ratio of the number of boys to the number of girls. If we denote the number of boys as …

GMAT OFFICIAL GUIDE DS – Solution: An easy way to solve the problem is to set up a double set matrix. In our matrix we have two main categories: …

GMAT OFFICIAL GUIDE DS Solution: We start by sketching the triangle. We need to determine the angle with the greatest degree measure. Remember that the angle with the greatest …

GMAT OFFICIAL GUIDE DS Solution: We are given that n + k = m, and we need to determine the value of k. Since we know that n + …

GMAT OFFICIAL GUIDE DS Solution: We need to determine the cube root of w. Thus, if we have a value for w, we can determine the value of the …

GMAT OFFICIAL GUIDE DS Solution: We need to determine whether x is a negative number. Statement One Alone: 9x > 10x We can subtract 9x from both sides of …

GMAT OFFICIAL GUIDE DS Solution: We are given a triangle in the coordinate plane, and we must determine whether angle QPR is a right angle. Remember that a right …