A man can swim 3 km/hr in still water . If the velocity of the stream is 2 km/hr the time taken by him to swim to place 18 km upstream and back is
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hey dude
v=3 km/hr velocity of boat in still water
u=2km/hr velocity of stream
downstream = v+u= 18/5
3.6 km/hr √√√√√√
upstream = 18/1 = 18km/hr
v=3 km/hr velocity of boat in still water
u=2km/hr velocity of stream
downstream = v+u= 18/5
3.6 km/hr √√√√√√
upstream = 18/1 = 18km/hr
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