Author: Jeff Miller

GMAT OFFICIAL GUIDE PS Solution: Let’s use a convenient value for the total number of people in town X. Since this is a percent problem, 100 is an easy …

GMAT OFFICIAL GUIDE PS Solution: Let’s use the answer choices to help us solve this problem. We are looking for the minimum number of letters that can be used. …

GMAT OFFICIAL GUIDE PS Solution: The defining factor of an arithmetic sequence is that there is a constant difference d between each successive pair of terms. We are given …

GMAT OFFICIAL GUIDE PS Solution: This problem can best be solved using combinations. It is similar to a problem in which 30 sports teams are playing in a tournament …

In the figure above, coordinates of point V… Solution: Looking at the diagram we can count to the right on the x-axis to get the x-coordinate of V, and …

GMAT OFFICIAL GUIDE PS Solution: When setting up ratios, we can set up a ratio in fraction form. For example, if we were told the ratio of a to …

GMAT OFFICIAL GUIDE PS Solution: To solve this question we can use the weighted average equation. Weighted Average = (Sum of Weighted Terms) / (Total Number of Items) We’ll …

GMAT OFFICIAL GUIDE PS Solution: We must solve the inequality for two cases: Case 1: (y-1/2) is Positive: |y – ½| < 11/2 y – ½ < 11/2 Add …