SOLUTION: Susan had a hoard of 22 nickels and dimes whose value was $1.35. How many of each coin did she have?

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Question 749533:

Susan had a hoard of 22 nickels and dimes whose value was $1.35. How many of each coin did she have?
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
N+D=22 OR N=22-D
.05N+.10D=1.35
.05(22-D)+.10D=1.35
1.10-.05D+.10D=1.35
.05D=1.35-1.10
.05D=.25
D=.25/.05
D=5 DIMES.
N=22-5
N=17 NICKLES.
PROOF:
.05*17+.10*5=1.35
.85+.50=1.35
1.35=1.35