Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 9 - Section 9.7 - Temperature and Conversions Between the U.S. and Metric Systems - Exercise Set: 20

Answer

$70\text{ mph}\approx 112.654\text{ kmph}$

Work Step by Step

If want to convert from miles per hour to kilometers per hour, we have to consider the following conversion rate: $0.62137\text{ mph}\approx 1 \text{ kmph}$ By dividing both sides by $0.62137$, we get: $1\text{ mph}\approx \frac{1}{0.62137} \text{ kmph}$ We mulitply both sides by 70 in order to get the answer to the question: $70\text{ mph}\approx \frac{70}{0.62137} \text{ kmph}\approx 112.654\text{ kmph}$
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