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September 18, 2014

September 18, 2014

Posted by **tim** on Monday, May 3, 2010 at 11:58am.

- algebra -
**Reiny**, Monday, May 3, 2010 at 12:05pmJared --- x

grandpa -- x+70

x + x+70 = 100

2x = 30

x = 15

so grandpa is 15+70 = 85

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