A man can swim at a speed of 4 km per h in still water how much time does he take to cross the river 1 km wide if river flows steadily at 3 km per h and he makes his strokes normal to the river current how far from the river does he go when he reaches the other bank
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Speed of the man,
vm = 4 km/h
Width of the river = 1 km
Time taken to cross the river
= Width of the river/ speed of the river
= 1/4 h
=15 min
Speed of the river, vr = 3 km/h
Distance covered with flow of the river
Distance covered with flow of the river = vr × t
= vr × t = 3× 1/4 = 3/4 km
= 3/4 × 1000 = 750 m
I hope, this will help you
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