Speed of a man in still water is (28/3) km/h. It takes him thrice as much time to row upstream as it takes to row downstream. What is the velocity of the stream?
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Speed of Stream = 14/3 km/hr
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Speed of a man in still water is (28/3) km/h. It takes him thrice as much time to row upstream as it takes to row downstream. What is the velocity of the stream?
Speed of a man in still water is (28/3) km/h
Let say speed of stream = S/3 km/hr
Speed of onam downstream = (28+S)/3 km/hr
Speed of Man upstream = (28 -S)/3 km/Hr
Time taken for a given distance = D
D/( (28 -S)/3) = 3 * D/((28+S)/3)
=> 28+S = 3 (28 - S)
=> 28 + S = 84 - 3S
=> 4S = 56
=> S = 14
S/3 = 14/3
Speed of Stream = 14/3 km/hr
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