Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 1 - Whole Numbers - Review Exercises: 118

Answer

Estimate: 60,000; Exact: 84,000

Work Step by Step

To estimate, we round 1400 to the nearest thousand, 1000, and multiply the rounded number of revolutions per minute by the number of minutes: 1000 x 60 = 60,000 revolutions To find the exact number, we multiply the exact number of revolutions per minute by the number of minutes: 1400 x 60 = 84,000 revolutions
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