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December 21, 2014

December 21, 2014

Posted by **Anonymous** on Tuesday, October 25, 2011 at 4:59pm.

- algebra -
**Steve**, Wednesday, October 26, 2011 at 12:02amadd up the times to hike d km:

d/1.8 + d/4.2 = 16

0.5555d + .2381d = 16

d = 16/.7936 = 20.16 km

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