Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 1 - Section 1.8 - Multiplication and Division of Fractions - Exercise - Page 49: 57


1$\frac{1}{4}$ hour

Work Step by Step

Given, service staff take 7$\frac{1}{2}$ hours to detail 6 cars We need to find how long it will take to for each car = 7$\frac{1}{2}$ $\div$ 6 = $\frac{15}{2}$ $\div$ 6 = $\frac{15}{2}$ $\times$ $\frac{1}{6}$ =$\frac{15}{12}$ =$\frac{5}{4}$ =1$\frac{1}{4}$ hour
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