Mohit Chhabra
Last Activity: 9 Years ago
let the man rows a distance of d meters
let velocity of man is v in still water
let velocity of river is V
now time taken by man to row in still water is t, which is equal to
t=d/v {eq 1}
now time taken by man to row the same distance while going downstream is T, which is equal to
T=d/(v+V) {eq 2} {velocity of man and river adds while going downstream}
divide numerator and denominator in eq 2 by v
1+(V/v) = t/T
v/V = T/(t-T)
pls tell is this ansewr helpful..
