document.write( "Question 1026915: A newspaper carrier has $7.20 in change. He has 6 more quarters than dimes but 5 times as many nickels as quarters. How many coins of each type does he have \n" ); document.write( "
Algebra.Com's Answer #804050 by CubeyThePenguin(3113) You can put this solution on YOUR website! n = number of nickels \n" ); document.write( "d = number of dimes \n" ); document.write( "q = number of quarters\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "q = d + 6 \n" ); document.write( "n = 5q\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Write everything in terms of d.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5n + 10d + 25q = 720 \n" ); document.write( "25q + 10d + 25q = 720 \n" ); document.write( "50q + 10d = 720 \n" ); document.write( "50d + 300 + 10d = 720 \n" ); document.write( "60d = 420 \n" ); document.write( "d = 7\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The newspaper carrier has 7 dimes, 13 quarters, and 65 nickels. \n" ); document.write( " |