SOLUTION: At a restaurant one family ordered 6 burgers and 5 fries, paying $68. Another family ordered 4 burgers and 7 fries, paying $75. Find the cost of 1 burger, and find the cost of 1 o

Question 1073390: At a restaurant one family ordered 6 burgers and 5 fries, paying $68. Another family ordered
4 burgers and 7 fries, paying $75. Find the cost of 1 burger, and find the cost of 1 order of fries.
Found 2 solutions by jorel1380, josgarithmetic:
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
Let b be burgers and f be fries. Then:
6b+5f=68
4b+7f=75
So:
42b+35f=476
20b+35f=375
22b=476-375=101
b=$4.59
f=$8.09
Burgers are $4.59 each; and fries are $8.09 each. ☺☺☺☺
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
x burgers
y fries

Multiply first equation by 2 and second equation by 3.

----------One order of fries, $8.09.

-------------One burger, $4.59.

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