SOLUTION: I need some help with this question. Can you help. A woman has $1.70 in dimes and nickels. She has 2 more dimes than nickels. How many nickels does she have?

Question 239274: I need some help with this question. Can you help.
A woman has $1.70 in dimes and nickels. She has 2 more dimes than nickels. How many nickels does she have?
Found 2 solutions by stanbon, Photonjohn:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I need some help with this question. Can you help.
A woman has $1.70 in dimes and nickels. She has 2 more dimes than nickels. How many nickels does she have?
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Equations:
Quantity Eq:::: d = n + 2
Value Eq::::: 10d + 5n = 170 cents
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Substitute d = n+2 into the Value Eq. and solve for "n":
10(n+2) + 5n = 170
10n+20 + 5n = 170
15n = 150
n = 10 (# of nickels)
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Since d = n+2, d = 12 (# of dimes)
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Cheers,
Stan H.
Answer by Photonjohn(42) (Show Source): You can put this solution on YOUR website!
D = N + 2
.1D + .05N = 1.70
Solving yields N = 10 and D = 12
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