A man swims downstream 72 km and upstream 45 km taking 9 hours each time; what is the speed of the current ?

Question

Accepted Answer

72 --- 9 ? ---- 1 => Down Stream = 8 45 ---- 9 ? ---- 1 => Up Stream = 5 Speed od current S = ? S = (8 - 5)/2 = 1.5 kmph.

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