SOLUTION: Josh rode his bike m miles to his friend's house in 20 minutes. He made the trip back in 15 minutes. Which of the following expressions represents Josh's average speed riding his b

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Question 883463: Josh rode his bike m miles to his friend's house in 20 minutes. He made the trip back in 15 minutes. Which of the following expressions represents Josh's average speed riding his bike?
A. 2m/35
B. 7m/60
C. 35/m
D. m/35

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
He drove m miles to and m miles from his friend's house for a total of 2m.
The time it took was 20+15=35 minutes.
Average speed is distance traveled over time elapsed.
S=%282m%29%2F35