SOLUTION: George saves dimes and nickels for tolls. If he has 28 coins worth 2.60, how many are nickels and how many are dimes. Thank you

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Question 265132: George saves dimes and nickels for tolls. If he has 28 coins worth 2.60, how many are nickels and how many are dimes. Thank you
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
N+D=28 OR N=28-D
.05N+.10D=2.60
.05(28-D)+.10D=2.60
1.40-.05D+.10D=2.60
.05D=2.60-1.40
.05D=1.20
D=1.20/.05
D=24 DIMES.
N=28-24
N=4 NICKELS.
PROOF:
.05*4+.10*24=2.60
.20+2.40=2.60
2.60=2.60