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December 18, 2014

December 18, 2014

Posted by **Melissa** on Friday, November 2, 2012 at 1:02am.

- Math -
**Steve**, Friday, November 2, 2012 at 1:33amthe distance is the same, so, with water speed = w,

(r-w)(1) = (r+w)(.5)

and (r-w)(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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