#### Answer

22.5 hours

#### Work Step by Step

$\frac{4 strips}{5 hours}$=$\frac{18 strips}{x hours}$
4x=18(5)
4x=90
x=22.5 hours

Published by
Pearson

ISBN 10:
0321825535

ISBN 13:
978-0-32182-553-7

22.5 hours

$\frac{4 strips}{5 hours}$=$\frac{18 strips}{x hours}$
4x=18(5)
4x=90
x=22.5 hours

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