SOLUTION: Luis has 37 coins, all nickels and dimes in his piggy bank. The value of the coins is $3.10. How many coins does Luis have

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Question 961337: Luis has 37 coins, all nickels and dimes in his piggy bank. The value of the coins is $3.10. How many coins does Luis have
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
n nickels, d dimes;

system%28n%2Bd=37%2C0.05n%2B0.1d=3.10%29

system%28n%2Bd=37%2Cn%2B2d=62%29