SOLUTION: I have 25 dimes and quarters that equal $4.90. How do I write a formula that will show how many dimes and how many quarters I have?

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Question 349106: I have 25 dimes and quarters that equal $4.90. How do I write a formula that will show how many dimes and how many quarters I have?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
I have 25 dimes and quarters that equal $4.90. How do I write a formula that will show how many dimes and how many quarters I have?
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Since d + q = 25
d = 25-q
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Value Equation: 25q + 10(25-q) = 490 cents
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Cheers,
Stan H.