SOLUTION: There are 12 coins that consist of quarters and dimes. The value of these coins is $2.25 Write a system of equations: Solve the system of equations: How many quarters and

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Question 439883: There are 12 coins that consist of quarters and dimes. The value of these coins is $2.25
Write a system of equations:
Solve the system of equations:
How many quarters and dimes do I have?
Found 2 solutions by Alan3354, jorel1380:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
d + q = 12
10d + 25q = 225
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You can do the rest, right?

Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=12
.1x+.25y=2.25
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Multiply the second equation by 100:
10x+25y=225
10x+10y=120
15y=105
y=7
x=5
There are 5 dimes and 7 quarters.