Basic College Mathematics (10th Edition)

by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.

Published by Pearson

ISBN 10: 0134467795

ISBN 13: 978-0-13446-779-5

Chapter 1 - Whole Numbers - Review Exercises - Page 108: 125

Answer

Estimate: 500; Exact: 513

Work Step by Step

To estimate the difference in spending for others vs themselves, we round 620 to 600 and round 107 to 100, and subtract the rounded numbers: 600 - 100 = 500 To find the exact difference in spending, we subtract the actual numbers: 620 - 107 = 513

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