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July 24, 2014

July 24, 2014

Posted by **Aaron** on Saturday, August 18, 2012 at 2:33pm.

- math -
**Steve**, Saturday, August 18, 2012 at 3:10pmdistance = rate * time

so, since the distance covered is the same both ways,

.8r * (t+10) = rt

.8rt + 8r = rt

8r = .2rt

8 = .2t

t = 40

so, total time = 40+10 + 40 = 90 minutes

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