A boat goes 2 km upstream and 1 km downstream in 5 hrs .The same boat goes 1km umstream and 2 km downstream in 4hrs . the speed of boat in still water is xkm/hr an the speed of stream in y km/hr.find the speed of the boat in upstream and downstream
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Speed of the boatman upstream =
1
2
km/hr = 2 km/hr
Speed of the boatman downstream =
60
10
1
km/hr = 6 km/hr
∴ Speed of boatman in stationary water =
2
1
(6+2) km/hr = 4 km/hr
∴ Time taken to cover 5 km in stationary water =
4
5
hrs=1
4
1
hrs = 1 hr 15 min
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Answer:
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