<PRE><B>Question 741340</B>
Mary has $2.85 in dimes and nickels. If she has 15 more dimes than nickels, how many of each coin does she have? 
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Value Equation: 5n + 10d = 285 cents
Quantity Equation: d = n+15
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5n + 10(n+15) = 285
15n + 150 = 285
15n = 135
n = 9
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Cheers,
Stan H.
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