SOLUTION: sarah has a collection of nickels, dimes and quarters worth $12.50. she has 10 more dimes than nickels and twice as many quarters as dimes. how many coins of each kind does she hav

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Question 1094416: sarah has a collection of nickels, dimes and quarters worth $12.50. she has 10 more dimes than nickels and twice as many quarters as dimes. how many coins of each kind does she have.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
sarah has a collection of nickels, dimes and quarters worth $12.50. she has 10 more dimes than nickels and twice as many quarters as dimes. how many coins of each kind does she have.
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worth $12.50 --> 5n + 10d + 25q = 1250
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10 more dimes than nickels --> d = n+10
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twice as many quarters as dimes --> q = 2d
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5n + 10d + 25q = 1250
d = n+10
q = 2d
Now what?