Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 2 - Solving Equations - 2-6 Ratios, Rates, and Conversions - Practice and Problem-Solving Exercises - Page 121: 9


Olga had the fastest average speed.

Work Step by Step

In order to find average speed, we divide the total distance traveled by the amount of time it took to travel that distance. Thus, we obtain: Trisha: $10km/2.5 hours=4$ km per hour Olga: $9.5km / 2.25 hours=4.22$ km per hour Jason: $ 7.5km/2 hours=3.75$km per hour Thus, we find that Olga had the fastest average speed.
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