document.write( "Question 1002940: You were given $0.65 change using only a total of 5 dimes and quarters combined. how many of each coin are there? \n" ); document.write( "
Algebra.Com's Answer #807691 by CubeyThePenguin(3113) You can put this solution on YOUR website! Mentally, we see that there are 4 dimes and 1 quarter.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Algebraically,\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "d = number of dimes \n" ); document.write( "q = number of quarters\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "10d + 25q = 65 \n" ); document.write( "d + q = 5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Multiply the second equation by 10.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "10d + 25q = 65 \n" ); document.write( "-(10d + 10q = 50) \n" ); document.write( "-------------------- \n" ); document.write( "15q = 15 \n" ); document.write( "q = 1\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Like before, we have 4 dimes and 1 quarter. \n" ); document.write( " |