find the rate of the man in still water

Asked by  | 5th Jun, 2009, 11:21: PM

Expert Answer:

let the velocity of man in still water be x

when the man goes upstream his resultant speed is (x-2)

time taken by him to cover 30 km upstream = 30/(x-2)

when the man goes downstream his resultant speed is (x+2)

time taken by him to cover 30 km upstream = 30/(x+2)

total time = 30/(x-2)+30/(x+2)=8

so x=8

Answered by  | 6th Jun, 2009, 12:47: AM

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