Homework Help: Intermediate Algebra

Posted by Wanda on Sunday, December 2, 2012 at 8:21am.

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.

Intermediate Algebra - bobpursley, Sunday, December 2, 2012 at 10:18am
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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