document.write( "Question 967523: A bill for $4.15 is paid in dimes and quarters only. If there are 4 fewer dimes than quarters, find the number of each kind of coins used to pay the bill? \n" ); document.write( "
Algebra.Com's Answer #808060 by CubeyThePenguin(3113)![]() ![]() You can put this solution on YOUR website! d = number of dimes \n" ); document.write( "q = number of quarters\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "10d + 25q = 415 \n" ); document.write( "d = q - 4\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "10(q - 4) + 25q = 415 \n" ); document.write( "10q - 40 + 25q = 415 \n" ); document.write( "35q = 455 \n" ); document.write( "q = 13\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "There are 9 dimes and 13 quarters. \n" ); document.write( " |