Question 6643: A man travel upstream at 8 miles per hour and downstream 12 miles and hour. This took him 2 hours to do. What is his average speed Answer by prabhjyot(165) (Show Source):
You can put this solution on YOUR website! The man travels upstream - 8 miles /hour
the man travels downstream - 12 miles
total distance covered = (8+12)=20 miles
total time for travelling this distance - 2 hours
Average speed = total distance/ time
Average speed = 20/2
average speed = 10 miles/hour
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