Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 1 - Problem Solving and Critical Thinking - 1.3 Problem Solving - Exercise Set 1.3: 15


The profit on six dozen calculators is $90.00

Work Step by Step

The store purchased the calculators at 65 dollars for 12 calculators. They sold them at 20 dollars for 3 calculators. This would be 80 dollars when 12 calculators are sold — 3 calculators sell for 20 dollars 6 calculators would then sell for 40 dollars So, 12 calculators would sell for 80 dollars. The profit on one dozen (12) calculators is: 80 - 65 = 15 So for one dozen calculators, the store profits 15 dollars. For six dozen calculators, the store will profit 6 x 15 which is 90 dollars. Therefore, the profit on six dozen calculators is 90 dollars,
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