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 - Page 26: 34

Answer

Estimated life expectancy = 288000 (Answers may vary.) Actual life expectancy = 353028

Work Step by Step

Average life expectancy in years = 40.3 Number of days in a year = 365 Total number of hours in a year = 365 x 24 Therefore, estimated life expectancy in hours is given as = 360 x 20 x 40 = 288000 hours Actual life expectancy in hours = 365 x 24 x 40.3 = 353028 hours
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