SOLUTION: Johnny Cash has three more quarters than dimes. The total value of the dimes and quarters together is $13. How many quarters does he have.

Question 987224: Johnny Cash has three more quarters than dimes. The total value of the dimes and quarters together is $13. How many quarters does he have.
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
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D=number of dimes; Q=number of quarters=D+3
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$0.10D+$0.25Q=$13
$0.10D+$0.25(D+3)=$13
$0.10D+$0.25D+$0.75=$13
$0.35D=$12.25
D=35
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Q=D+3=35+3=38
ANSWER: He has 38 quarters.
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CHECK:
$0.10D+$0.25Q=$13
$0.10(35)+$0.25(38)=$13
$3.50+$9.50=$13
$13=$13
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