SOLUTION: a car traveled 600 miles at 60 mph and 40mph on the return trip. What was the average speed for the whole trip

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Question 358662: a car traveled 600 miles at 60 mph and 40mph on the return trip. What was the average speed for the whole trip
Answer by checkley77(12844)   (Show Source): You can put this solution on YOUR website!
d=rt
d/r=t
300/60+300/40=t
5+7.5=t
t=12.5 hours.
600/12.5=48 mph. is the average for the entire trip.

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