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: 26

Answer

Estimated annual income: 62400 Actual annual income: 62088

Work Step by Step

Number of weeks in an year = 52 Income of the man = 29.85 per hour Hours to work per week = 40 Therefore, estimated annual income of the man = 30 x 40 x 52 = 62400. Actual annual income = 29.85 x 40 x 52 = 62088 It is a very reasonable estimate, as the difference between the two numbers is only 312.
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