SOLUTION: Joe has 28 coins. Some are nickels and some are dimes. The sum of the number of nickels and 3 times the number of dimes is 40. How many nickels and how many dimes does Joe have?

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Question 387604: Joe has 28 coins. Some are nickels and some are dimes. The sum of the number of nickels and 3 times the number of dimes is 40. How many nickels and how many dimes does Joe have?
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
Let n=number of nickels and d=number of dimes
.
n+3d=40
n+d=28
---------subtract
2d=12
.
d=6
n=22
.
Ed