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January 28, 2015

January 28, 2015

Posted by **Anonymous** on Monday, September 12, 2011 at 6:46pm.

- math -
**drwls**, Monday, September 12, 2011 at 7:04pmA + C = 120

10 A + 8 C = 1120

Solve that pair of equations for the two unknowns

C = 120 - A

10 A + 960 -8A = 1120

2A = 160

A = 80

C = 40

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