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October 1, 2014

October 1, 2014

Posted by **miki** on Tuesday, September 27, 2011 at 8:18pm.

- math -
**PsyDAG**, Wednesday, September 28, 2011 at 3:04amLet x = # books in third pile, then second pile = 2x, and first pile = 2x + 10.

x + 2x + (2x+10) = 3000

Solve for x.

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