Asked 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.

Answers

Answered by bobpursley
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
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