SOLUTION: A man travels some distance at speed of 12km per hour and return at 9km per hour. if the total time taken by him is 2 hrs 20 min find the distance
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Question 919317: A man travels some distance at speed of 12km per hour and return at 9km per hour. if the total time taken by him is 2 hrs 20 min find the distance Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! A man travels some distance at speed of 12km per hour and return at 9km per hour. if the total time taken by him is 2 hrs 20 min find the distance
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Avg speed for the round trip is 2*12*9/(12+9)
Avg = 216/21 = 72/7 km/hr
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d = r*t
d = (72/7)*(7/3) = 24 km RT
12 km each way
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