The speed of a boat in still water is 29mph. if the boat travels 140mph downstream in the same time that it takes to travel 92miles upstream, find the speed of the stream.

Answer 1

distance=velocity*time
distanceupstream=(29+Vs)time
distancedownstream=(29-Vs)time

set the distances to bd 140 downstream, and 92 up

140=(29+vs)time
92=(29-Vs)time

or 140/92 =(29+Vs)/(29-Vs)

92(29+Vs)=140(29-Vs) and you solve for Vs