Homework Help: algebra

Posted by chris on Saturday, May 26, 2012 at 11:28pm.

In a canoe race, a team paddles downstream 480 m. in 60 s. The same team travels up stream in 80 s. Find the team's rate in still water and the rate of the current.

Please show how the equation is set up to solve

algebra - drwls, Sunday, May 27, 2012 at 1:11am
Let the distance paddled (one way) be L = 480 m

Let V be the canoe speed in still water and v be the stream speed.
L/(V+v) = 60 s
L/(V-v) = 80 s
(V+v)/(V-v) = 80/60 = 4/3
V + v = (4/3)V - (4/3)v
V/3 = (7/3)v
v = V/7

480/(8V/7) = 60
V = 7 m/s
v = 1 m/s
algebra - caroline cropper, Sunday, May 27, 2012 at 9:27am
love math ice take

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