SOLUTION: Sam’s big jar of nickels and dimes contained $30. If 500 coins were in the jar, how many of each kind were there?

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Question 1080920: Sam’s big jar of nickels and dimes contained $30. If 500 coins were in the jar, how many of each kind were there?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.N%2BD=500
and
0.05N%2B0.10D=30
2.N%2B2D-600
Subtract 1 from 2,
N%2B2D-N-D=600-500
D=100
Now use either equation to solve for N.