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Call the number of nickels n and the number of dimes d. From the problem statement,

d = 2n - 12 and 0.05n + 0.10d = 2.55. Substitute the first of these equations into the second to yield 0.05n + 0.10 (2n - 12) = 2.55, or 0.05n + 0.20 n - 1.2 = 2.55, or

0.25n = 3.75; n = 3.75/0.25 = 15; d = 30 - 12 = 18.

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Q: A stack of nickels and dimes is worth 2.55 Find the number of nickels if the number of dimes is 12 less than twice the number of nickels?
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Helen has twice as many dimes as nickels and five more quarters than nickels the value of her coins is 4.75 how many dimes does she have?

Helen has twice as many dimes as nickels and five more quarters than nickels the value of her coins is 4.75 how many dimes does she have?


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A stack of nickels and dimes is worth 2.55 Find the number of nickels if the number of dimes is12 less than twice the number of nickels?

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The question is incomplete. Please post a new version with the rest of the problem.


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