document.write( "Question 729228: Mandy's Candies is most famous for their homemade fudge and homemade toffee. They make an average of 154 pounds of fudge and toffee combined each month. They sell a pound of fudge for $9.64 and a pound of toffee for $6.44. Mandy's averages $1,231.76 each month in fudge and toffee sales. On average, how many pounds each of fudge and toffee does Mandy's Candies sell in one month? \n" ); document.write( "
Algebra.Com's Answer #445794 by mbmodak(32)![]() ![]() ![]() You can put this solution on YOUR website! Let qty of fudge be x pounds & qty of toffee be y pounds per month \n" ); document.write( " \n" ); document.write( "They make an average of 154 pounds of fudge and toffee combined each month \n" ); document.write( " \n" ); document.write( "x+y=154 (1) \n" ); document.write( " \n" ); document.write( "They sell a pound of fudge for $9.64 and a pound of toffee for $6.44. Mandy's averages $1,231.76 each month in fudge and toffee sales. On average, \n" ); document.write( " \n" ); document.write( "So cost of monthly fudge&toffee is 9.64*x+6.44*y=1231.76 \n" ); document.write( " \n" ); document.write( "9.64x+6.44y=1231.76 ;(2) \n" ); document.write( " \n" ); document.write( "multiply eq (1) by 9.64 & then subtract 2 from 1 \n" ); document.write( " \n" ); document.write( "9.64x+9.64y=154*9.64 \n" ); document.write( "9.64x+9.64y=1484.56 (1') \n" ); document.write( "9.64x+6.44y=1231.76 ;(2) \n" ); document.write( "----------------------- \n" ); document.write( "(9.64-6.44)y=1484.64-1231.76 \n" ); document.write( " \n" ); document.write( "3.2y=252.8 \n" ); document.write( " \n" ); document.write( "y=252.8/3.2=79 pounda \n" ); document.write( " \n" ); document.write( "In order to solve for x, take the value for y and substitute it back into either one of the original equations. \n" ); document.write( " \n" ); document.write( "x+79=154 \n" ); document.write( " \n" ); document.write( "x=154-79=75 pounds So they make 75 pounds of fudge & 79 pounds of toffee per month \n" ); document.write( "so monthly cost is \n" ); document.write( "9.64*75+6.44*79=1231.76 \n" ); document.write( " \n" ); document.write( " |