A boat travels 36 km upstream in 9 hours and 42 km downstream in 7 hours. Find the speed of the boat in still water and the speed of the water current ?
Upstream speed of the boat = 36/9 = 4 kmph
Downstream speed of the boat = 42/ 7 = 6kmph.
Speed of the boat in still water = (6+4) / 2.
= 5 kmph
Speed of the water current = (6-4) /2
= 1 kmph
Back To Top