Question 334709: A coin collector has $1.70 in dimes and nickels. She has 2 more dimes than nickels.how many nickels does she have? Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! 1.70=.05n+.10(n+2)
1.70=.05n+.10n+.20
1.70-.20=.15n
.15n=150
n=1.50/.15
n=10 number of nickels.
10+2=12 number of dimes.
Proof:
1.70=.05*10+.10*12
1.70=.50+1.20
1.70=1.70
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