GMAT Quantitative Reasoning Practice Set 9

A runner is training for an upcoming race. For four weeks, he implements a new workout regimen using a treadmill. Four days a week, he does an intensive workout that burns 450 calories followed by two light workouts, one in the afternoon and one in the evening, that burn 100 calories each. The other three days, the runner does five small workouts a day, burning a total 300 calories a day. What is the average number of calories burned per workout?

Find the circumference of the circle

Alex tutors students on the weekend and deposits the money into his account. Over the past 6 weeks he has made deposits of $75, $83, $91, $48, $74, $61. What must his deposits average over the next four weeks to increase his total weekly average deposit to $80?

Jefferson is self-employed. During the summer he likes to work fewer hours each week, but he increases his rates so that his weekly pay is consistent year round. He plans to decrease his hours by 25% this year. By what percent must he increase his rates?

If 4x – y = 6, what is 16^x / 2^y ?

In the figure below, lines AB and CD intersect at Point E. If m∠AEC:m∠AED is 3:7, what is m∠DEB?

The school held a community service project collecting trash. Students were put into groups of 4, and each group was required to collect 15 bags of trash. The school collected 1,305 bags of trash. How many students participated?

When emptying the collection box on his vending machine, Isaac counted a combination of 118 one and five dollar bills, totaling $266. How many $5 bills were there?