Posted by Melissa on Friday, November 2, 2012 at 1:02am.
Jared can paddle his canoe 1 mile upstream in 1 hour, but it takes only a half hour to paddle back the same distance. Find the speed of water. (Hint: d=rt and the rate or canoe speed, depending on which way he is going.)

Math  Steve, Friday, November 2, 2012 at 1:33am
the distance is the same, so, with water speed = w,
(rw)(1) = (r+w)(.5)
and (rw)(1) = 1, so r = w+1
(r+w)(.5) = w+.5 = 1, so w = 1/2
so,r = 3/2
check:
upstream: 1 mile/1mph = 1 hour
1 mile/2mph = .5 hour
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