Thinking Mathematically (6th Edition)

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

Chapter 1 - Problem Solving and Critical Thinking - 1.2 Estimation, Graphs, and Mathematical Models - Exercise Set 1.2: 35

Answer

estimated = 42 rounding off = 42.03

Work Step by Step

After rounding off the estimate is simplified as $\frac{0.2 * 105}{0.5}$ = 42 The actual calculation is $\frac{0.19996 * 107}{0.509}$ = 42.03
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