SOLUTION: Micheal drove to a friends house at a rate of 40 mi/h. He returned by the same route at a rate of 45 mi/h. The driving time for the round trip was 4 h. What is the distance Mich

Question 645229: Micheal drove to a friends house at a rate of 40 mi/h. He returned by the same route at a rate of 45 mi/h. The driving time for the round trip was 4 h. What is the distance Michael traveled.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Micheal drove to a friends house at a rate of 40 mi/h. He returned by the same route at a rate of 45 mi/h. The driving time for the round trip was 4 h. What is the distance Michael traveled.
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Avg speed for the round trip = 2*40*45/(40+45) = 3600/85 mi/hr
Avg speed = 720/17 mi/hr
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d = r*t
d = (720/17)*4 = 2880/17 miles round trip
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