If the boat goes 7 kms upstream in 42 min and speed of the stream is 3 kmph, then the speed of the boat in still water ?

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Accepted Answer

Given that, upstream distance = 7 kms Upstream speed = 7/42 x 60 = 10 kms Speed of the stream = 3 kmph Let speed in still water = M kmph, then Upstream speed = M - 3 = 10 => M = 13 kmph.

If the boat goes 7 kms upstream in 42 min and speed of the stream is 3 kmph, then the speed of the boat in still water ?

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