Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 7 - Measurement - 7.1 Problem Solving with U.S. Measurement Units - 7.1 Exercises: 49

Answer

174,240 inches

Work Step by Step

2 $\frac{3}{4}$ mile = in. Use the unit fraction $\frac{5280 feet}{1 mile}$ to change mile to feet and the unit fraction $\frac{12 inches}{1 foot}$ to change feet to inches. Notice how all the units divide out except inches, which is the unit you want in the answer. 11/4 * $\frac{5280 feet}{1 mile}$ * $\frac{12 inches}{1 foot}$ = 174,240 inches
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