Question

a motor boat whose speed is 18km/hr in still water. It takes 1 hr more to go 24km upstream than to return downstream to the same spot.Find the speed of the stream

Answer 1

let 18-x is updtream speed and 18+x is downstream speed and by solving this equation you will get speed of stream

Answer 2

let the speed of stream= X
so speed of boat with stream= 18+X
speed of boat against stream=18-x
now by question,

$\frac{24}{18 + x} + 1 = \frac{24}{18 - x}$
X= 6km/h
this is your required answer