Prealgebra (7th Edition)

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

Chapter 6 - Section 6.1 - Ratios and Rates - Exercise Set: 15

Answer

4

Work Step by Step

7$\frac{3}{5}$ hours to 1$\frac{9}{10}$ hours $\frac{7\times5 +3}{5}$ to $\frac{1\times10 +9}{10}$ = $\frac{35 +3}{5}$ to $\frac{10 +9}{10}$ = $\frac{38}{5}$ to $\frac{19}{10}$ = $\frac{38}{5}$ $\div$ $\frac{19}{10}$ = $\frac{38}{5}$ $\times$ $\frac{10}{19}$ = $\frac{38\times10}{5\times19}$ = $\frac{19\times2\times5\times2}{5\times19}$ =$\frac{2\times2}{1}$ =$\frac{4}{1}$ =4
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