On a rough day there is a uniform current in the river,the speed of da river is v .which will help the onward journey and impede the return.if the boat takes t sec t go and come back .wat is ratio between t/t

Dear akhil

question is not clear

let speed of boat is u

t=d/(v+u)

t'' =d/(u-v)

so t/t''  =(u-v)/(u+v)

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