SOLUTION: Derek has 60 coins consisting of nickels and quarters. If the total value of the coins is $12.40, how many nickels does he have? How many quarters?
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Question 366189: Derek has 60 coins consisting of nickels and quarters. If the total value of the coins is $12.40, how many nickels does he have? How many quarters?
Answer by nyc_function(2741) (Show Source): You can put this solution on YOUR website!
Let n = nickels
Let Q = quarters
n + q = 60
0.05n + 0.25q = 12.40
We have a system of linear equations in two variables.
Solving by substitution, I found that n = 13 and q = 47
Done!
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