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September 18, 2014

September 18, 2014

Posted by **Fran** on Tuesday, October 2, 2012 at 9:29pm.

- Math -
**Steve**, Wednesday, October 3, 2012 at 10:53amif the distance is a hilly km and b flat km, then

a/2 + b/3 + b/3 + a/6 = 6

4a + 4b = 36

a + b = 9

so, she walks 18 km

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