Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 2 - Solving Equations - Chapter Test - Page 157: 7


12.5 miles per hour

Work Step by Step

We start with the rate: 2.5 miles per 12 minutes. Thus, we need to use unit conversions to solve. We find: $\frac{2.5 miles}{12 minutes} \times \frac{60 minutes}{hour} =12.5$ miles per hour. Note, we need to cancel out the unit of minutes, so we multiply by a fraction with minutes in the numerator as our first fraction has minutes in the denominator.
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