SOLUTION: If I had 100 coins that were nickel and dimes and equal 8.50 how many nickel and dimes would I have

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Question 963748: If I had 100 coins that were nickel and dimes and equal 8.50 how many nickel and dimes would I have
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
n = number of nickels
d = number of dimes

n + d = 100
5n + 10d = 850

10n + 10d = 1000
-5n - 10d = -850
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5n = 150
n = 30

There are 30 nickels and 70 dimes.