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July 28, 2014

July 28, 2014

Posted by **Doris** on Wednesday, December 5, 2012 at 3:32am.

- Algebra -
**Doris**, Wednesday, December 5, 2012 at 3:52amPlease show me how to set this problem up. I am confused.

- Algebra -
**Alex**, Wednesday, December 5, 2012 at 7:43amYou need to set up a system of equations. No one knows how many of each type of bill there is. Let t=twenties and f=fifties.

t+f=36

20t+50f=1170

-20(t+f=36)=-20t+-20f=-720

20t+50f=1170

30f=450 f=15

t+15=36

-15 -15

t=21

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