SOLUTION: 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 can

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?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
S and L
3L+7S=33.75
8L+11S=67
multiply top by 11 and bottom by -7 to eliminate S
33L+77S=371.25
-56L-77S=-469
-23L=97.75
L=$4.25
Cost of 2 is $8.50
-
check
12.75+7S=33.75
S=$3
so 8*$4.25+$33 should be $67, which it is
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