Author: Scott Woodbury-Stewart

GMAT OFFICIAL GUIDE PS Solution: We are given that the ratio of students to teacher is 30 to 1. We can rewrite this using variable multipliers. students : teachers …

GMAT OFFICIAL GUIDE PS Solution: This problem is called a combined work problem. In these problems we use the formula: Work (of machine 1) + Work (of machine 2) …

GMAT OFFICIAL GUIDE PS Solution: This problem will be best solved using the remainder formula. Let’s first state the remainder formula: When positive integer x is divided by positive …

If Jake loses 8 pounds, he will weigh twice… Solution: This problem can be solved as a simple word problem in which we must convert words to math. Before …

GMAT OFFICIAL GUIDE PS Solution: We are given that Q is an ODD NUMBER and that the median of Q CONSECUTIVE INTEGERS is 120. Let’s choose a convenient number …

GMAT OFFICIAL GUIDE PS Solution: We are given that 100 batteries cost a TOTAL of q dollars. We are also given that EACH battery was sold at 50% above …

GMAT OFFICIAL GUIDE PS – Solution: To determine which answer choice MUST be divisible by 3 we need to determine answer choice(s) in which there is at least one …

GMAT OFFICIAL GUIDE PS Solution: This problem is what we would call a combined worker problem, where Work (of machine 1) + Work (of machine 2) = Total Work …