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)![]() ![]() You can put this solution on YOUR website! n = number of nickels \n" ); document.write( "d = number of dimes\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5n + 10d = 515 \n" ); document.write( "n = d + 7\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Substitute n = d + 7.\r \n" ); document.write( " \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 \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "There are 32 dimes and 39 nickels. \n" ); document.write( " |