Author: Jeff Miller

GMAT OFFICIAL GUIDE DS Solution: To show Jim’s salary and commissions last month, we can create an equation in which n = his base salary and p = his …

GMAT OFFICIAL GUIDE DS Solution: We need to determine whether a + b + 3 is odd, or in other words, whether a + b is even. Statement One …

GMAT OFFICIAL GUIDE DS Solution: We need to determine whether the product of x and y is even. Statement One Alone: x^2 + y^2 − 1 is divisible by …

GMAT OFFICIAL GUIDE DS Solution: We are given that x and y are positive numbers and need to determine whether (x + 1)/(y + 1) > x/y. Simplifying the …

GMAT OFFICIAL GUIDE DS Solution: We have a group of 50 households and need to determine how many of those households have at least one cat or at least …

GMAT OFFICIAL GUIDE DS Solution: We need to determine the number of people in the line who are behind Beth, given that Beth is standing behind Adam and the …

GMAT OFFICIAL GUIDE DS Solution: We need to determine whether the area of the triangular region is less than 20. Statement One Alone: x^2 + y^2 ≠ z^2 Because …

GMAT OFFICIAL GUIDE DS Solution: We are given the ratio: blue : yellow : red = 2x : 3x : x We need to determine if there is enough …