SOLUTION: rick has 20 coins either quarters or nickels if the value of his coins is 2.60 how many nickles does he have

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Question 168192: rick has 20 coins either quarters or nickels if the value of his coins is 2.60 how many nickles does he have
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
Q+N=20 OR Q=20-N
.25(20-N)+.05N=2.60
5-.25N+.05N=2.60
-.2N=2.60-5
-.2N=-2.40
N=-2.40/-.2
N=12 NICKELS.
Q+12=20
Q=20-12
Q=8 QUARTERS.
pROOF:
.25*8+.05*12=2.60
2+.60=2.60
2.60=2.60