r1(downstream)= 288/12=24 r2(upstream)=288/36=8        r1=3r2r(boat) + r(curent) = 3r(upstream)     #1   r(boat)-r(current) = r(downstream)  #22r(boat) = 4r(downstream)r(boat)=2r(downstream) =16...

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by Goran016 at November 01, 2009