Answer
3.75 hours
Work Step by Step
$\frac{80mi}{3hr}=\frac{100mi}{x}$
Cross multiply to solve for x.
$80x=3\times100$
$80x\div80=300\div80$
$x=3.75$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 6 - Test - Page 464: 18
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