document.write( "Question 965860: If you have to pay $75.00 and have 27 bills of $1.00 and $5.00, how many bills do you need of $1.00 and $5.00 to pay. \n" ); document.write( "
Algebra.Com's Answer #802414 by CubeyThePenguin(3113)![]() ![]() You can put this solution on YOUR website! x = number of $1 bills \n" ); document.write( "y = number of $5 bills\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x + y = 27 \n" ); document.write( "x + 5y = 75\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Multiply equation 1 by 5.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5x + 5y = 135 \n" ); document.write( "x + 5y = 75\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Subtract to get 4x = 60 and x = 15.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "You need 15 one-dollar bills and 12 five-dollar bills. \n" ); document.write( " |