SOLUTION: A race track measures 8 miles long. If an automobile completes the track in exactly 3 minutes, what is its average rate of speed in miles per hour?
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Question 20198: A race track measures 8 miles long. If an automobile completes the track in exactly 3 minutes, what is its average rate of speed in miles per hour? Answer by wuwei96815(245) (Show Source):
You can put this solution on YOUR website! distance = speed x times
8 miles = speed x (3minutes x 1hour/60minutes)
8miles = speed x 1/20 of an hour = speed x 0.05hours
8miles/0.05hours = speed
160 mph = speed
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