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 - Page 485: 26

Answer

$\frac{5}{2}$ ft or 2.5 ft

Work Step by Step

30 in. = ft Use a unit fraction with foot (the unit for your answer) in the numerator, and inches (the unit being changed) in the denominator. Because 12 inches (in.) = 1 foot (ft), the necessary unit fraction is $\frac{1 foot}{12 inches}$ Multiply 30 in. times the unit fraction. 30 * $\frac{1 foot}{12 inches}$ = $\frac{5}{2}$ ft = 2.5 ft
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