Algebra 1: Common Core (15th Edition)

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

Chapter 2 - Solving Equations - 2-9 Percents - Practice and Problem-Solving Exercises: 55

Answer

75 mph

Work Step by Step

In order to figure out the speed that the race driver is going, we need to cancel out the km per hour to get miles per hour. Thus, we multiply 120 km/hr by 5/8 miles per km to get that the car is going 75 miles per hour.
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