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January 30, 2015

January 30, 2015

Posted by **Anonymous** on Friday, March 18, 2011 at 9:16am.

- Algebra 1 -
**PsyDAG**, Friday, March 18, 2011 at 11:58amLet P = pigs and C = chickens

P + C = 220 or

P = 220 - C

4P + 2C = 520

Substitute 220-C for P in second equation and solve for C. Insert that value into the first equation and solve for P. Check by inserting both values into the second equation.

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