SOLUTION: How would I write the equation for: Bill has $11.55 in dimes and quarters. He has 8 times as many dimes as quarters. How many dimes does he have?

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Question 237485: How would I write the equation for:
Bill has $11.55 in dimes and quarters. He has 8 times as many dimes as quarters. How many dimes does he have?
Answer by stanbon(48568) About Me  (Show Source):
You can put this solution on YOUR website!
Bill has $11.55 in dimes and quarters. He has 8 times as many dimes as quarters. How many dimes does he have?
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Value Equation: 10d + 25q = 1155 cents
Quantity Eq.:::: d = 8q
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Substitute for "d" and solve for "Q":
10(8q) + 25q = 1155
105q = 1155
q = 11 (# of quarters)
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Then d = 8q = 8*11 = 88 (# of dimes)
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Cheers,
Stan H.