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?

Algebra ->  Customizable Word Problem Solvers  -> Coins -> 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?       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

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) About Me  (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!