SOLUTION: Which system describes the following situation? Craig has 80 cents in nickels n and dimes d. He has four more nickels than dimes.

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Question 1076033: Which system describes the following situation?

Craig has 80 cents in nickels n and dimes d. He has four more nickels than dimes.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
It is a system of two linear equations.
nickels=n
n+n-4=number of coins=2n-4
.05n+.10(n-4)=0.80
.05n+.10n-.40=0.80
.15n=1.20
n=8 nickels
n-4=4 dimes
That is 40+40=80 cents.