Questions
A man can swim with a speed of 4 kmph in still water. He crosses a river 1 km wide that flows steadily at 3 kmph. If he makes his strokes normal to the river current, how far down the river does he go when he reaches the other bank?
detailed solution
Correct option is C
To cross the river, the man takes =1 km4 km/h=14h During this time, the river takes him down stream by3 kmh×14h=34km=750 m .Talk to our academic expert!
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A body which has a speed of 5km/hr in still water crosses a river of width 1km along the shortest possible path in 15minutes. The velocity of the river water in km/hr is
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