document.write( "Question 998032: Maggie has been collecting nickels and dimes for 2 weeks, and she has a total of 5.15. If she has 7 more nickles than she has dimes, how many of each coin does she have? \n" ); document.write( "
Algebra.Com's Answer #807676 by CubeyThePenguin(3113)\"\" \"About 
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n = number of nickels
\n" ); document.write( "d = number of dimes\r
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\n" ); document.write( "\n" ); document.write( "5n + 10d = 515
\n" ); document.write( "n = d + 7\r
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\n" ); document.write( "\n" ); document.write( "Substitute n = d + 7.\r
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\n" ); document.write( "\n" ); document.write( "5(d + 7) + 10d = 515
\n" ); document.write( "5d + 35 + 10d = 515
\n" ); document.write( "15d = 480
\n" ); document.write( "d = 32\r
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\n" ); document.write( "\n" ); document.write( "There are 32 dimes and 39 nickels.
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