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November 23, 2014

November 23, 2014

Posted by **KIM** on Wednesday, April 21, 2010 at 3:33pm.

- Algebra -
**PsyDAG**, Thursday, April 22, 2010 at 1:55pmLet x = 50s and y = 20s

x + y = 48

x = 48 - y

50x + 20y = 1410

Substitute 48 - y for x in the second equation and solve for x. Put that value in the first equation to find y. Check by putting both values into the second equation.

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