posted by Wanda .
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.
set the distances to bd 140 downstream, and 92 up
or 140/92 =(29+Vs)/(29-Vs)
92(29+Vs)=140(29-Vs) and you solve for Vs