document.write( "Question 342634: mary has 3.00 in nickels, dimes, and quarters. If she has twice as many dimes as quarters and five more nickels than dimes, how many coins of each type does she have? \n" ); document.write( "
Algebra.Com's Answer #245228 by stanbon(75887)\"\" \"About 
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mary has 3.00 in nickels, dimes, and quarters. If she has twice as many dimes as quarters and five more nickels than dimes, how many coins of each type does she have?
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\n" ); document.write( "Equations:
\n" ); document.write( "Value Eq::: 5n + 10d + 25q = 300
\n" ); document.write( "Quantity Eq: d = 2q
\n" ); document.write( "Quantity Eq: n = d+5
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\n" ); document.write( "Substitute for n and for d, and solve for \"q\":
\n" ); document.write( "5(d+5) + 10(2q) + 25q = 300
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\n" ); document.write( "5(2q+5) + 20q + 25q = 300
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\n" ); document.write( "10q+ 25 + 45q = 300
\n" ); document.write( "55q = 275
\n" ); document.write( "q = 5 (# of quarters)
\n" ); document.write( "----
\n" ); document.write( "d = 2q = 2*5 = 10 (# of dimes)
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\n" ); document.write( "n = d+5 = 15 (# of nickels)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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