Boat can travel 14.4 km downstream in 40 min. if the speed of current is 1/5 of the speed of boat in still water . find the distance travelled by boat in 20 min upstream
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Let the speed of boat in still water be x
Speed in downstream 1/5x
Speed *time=distance
1/5x*40=14.4
8x=14.4
x=1.8km/min
Distance covered upstream in 20 min
Distance =speed *time
=1/5*1.8*20
=7.2km
Speed in downstream 1/5x
Speed *time=distance
1/5x*40=14.4
8x=14.4
x=1.8km/min
Distance covered upstream in 20 min
Distance =speed *time
=1/5*1.8*20
=7.2km
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