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April 18, 2014

April 18, 2014

Posted by **Megan Brown** on Monday, January 31, 2011 at 11:38am.

Christa is a waitress and collects her tips at the table. At the end of the shift she has 68 bills, all ones and fives. If the total value of her tips is 172, how many of each bill does she have?

- Math -
**helper**, Monday, January 31, 2011 at 12:35pmn = number of ones

1n = value of ones

68 - n = number of fives

5(68 - n) = value of fives

n + 5(68 - n) = 172

n + 340 - 5n = 172

-4n = -168

n = 42

n = 42 ones = 42.00

68 - n = 26 fives = 130.00

68 bills = 172

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