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July 29, 2014

July 29, 2014

Posted by **Adri** on Tuesday, August 30, 2011 at 9:45am.

- math -
**MathMate**, Tuesday, August 30, 2011 at 1:34pmLet the total distance be x.

(x/2)/60 + (x/2)/40 = (10minutes)/(60minutes/hour)

x/120+x/80 = 1/6

multiply by common denominator 240

2x+3x = 40

5x=40

x=8 km

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