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Posted by **bilal** on Tuesday, April 5, 2011 at 7:05pm.

- geometry -
**PsyDAG**, Tuesday, April 5, 2011 at 8:06pmLet x = $5 bills and y = $10 bills

x + y = 124

x = 124-y

5x + 10y = 840

Substitute 124-y for x in third equation and solve for y. Insert that value into the first equation and solve for x. Check by inserting both values into the last equation.

- algebra -
**PsyDAG**, Tuesday, April 5, 2011 at 8:07pmHow does your problem relate to geometry?

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