A river (width = 200 m) is flowing at a speed of 3 km/h. A man swims across the river along
the shortest path and swims back the same way. If the velocity of swimming of man is 5
km/h in still water then time taken by the man for his round trip is in hours is
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Explanation:
relative speed= (5-3)km/h= 2km/h
d= 200m
t= 200m/2000m/60s
= 12000s/2000= 6sec
hope this help
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