Question 816016: a math woman has 57 coins consisting of dimes and quarters. if the value of this money is 12.00, how many dimes and quarters does she have
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! d + q = 57
q = 57 - d
10d + 25q = 1200
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10d + 25q = 1200
10d + 25(57 - d) = 1200
10d + 1425 - 25d = 1200
15d = 225
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d = 15
q = 42
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