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A man travels from A to B at 4 mph over a certain journey
and returns over the same route to A, at 5 mph. What is his
average speed for the journey?
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Answer Posted / guest
avg speed =2xy/x+y
avg speed=2*4*5/(4+5)
=40/9=4.444mph
| Is This Answer Correct ? | 13 Yes | 0 No |
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