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October 21, 2014

October 21, 2014

Posted by **Jane** on Thursday, December 29, 2011 at 6:12pm.

Sharon has some one-dollar bills and some five-dollar bills. She has 14 bills. The value of the bills is $30. Solve a system of equations using elimination to find how many of each kind of bill she has.

- math -
**bobpursley**, Thursday, December 29, 2011 at 6:41pmONE*1+FIVE*5=30

where ONE is the number of ones, and FIVE is the number of fives.

ONE+FIVE=14

Five=14-ONE

ONE*1+(14-ONE)5=30

ONE+70-5*ONE=30

-4ONE=-40

ONE=8 bills, then FIVE =6

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