document.write( "Question 1173101: Brittney and Steven are selling candy for a school fundraiser. Customers can buy small boxes of candy and large boxes of candy. Brittney sold 3 large boxes and 7 small boxes of candy for a total of $33.75. Steven sold 8 large boxes and 11 small boxes of candy for a total of $67. What is the total cost if a customer buys 2 large boxes of candy? \n" ); document.write( "
Algebra.Com's Answer #798256 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! S and L \n" ); document.write( "3L+7S=33.75 \n" ); document.write( "8L+11S=67 \n" ); document.write( "multiply top by 11 and bottom by -7 to eliminate S \n" ); document.write( "33L+77S=371.25 \n" ); document.write( "-56L-77S=-469 \n" ); document.write( "-23L=97.75 \n" ); document.write( "L=$4.25 \n" ); document.write( "Cost of 2 is $8.50 \n" ); document.write( "- \n" ); document.write( "check \n" ); document.write( "12.75+7S=33.75 \n" ); document.write( "S=$3 \n" ); document.write( "so 8*$4.25+$33 should be $67, which it is \n" ); document.write( " |