Author: Scott Woodbury-Stewart

GMAT OFFICIAL GUIDE PS Solution: We use the term “leading zeros” to describe the zeros between the decimal point and the first nonzero decimal digit. To complete this problem …

GMAT OFFICIAL GUIDE PS Solution: This is a two-part probability question. We should first notice that since our answer choices are in decimal form, we can use a real …

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 …