Question

A boat covers 14 kms in upstream and 20 kms downstream in 7 hours. Also it covers 22 kms upstream and 34 kms downstream in 10 hours. Find the speed of the boat in still water and of that the stream

Answer 1

(v-x)/14+(v+x)/20=7 -(1)

(v-x)/22+(v+x)/34=10 -(2)

on solving ,
v=velocity of boat in still water
x=velocity of river