Eight burgers and three orders of fries cost $79.49. Six orders of fries and twelve burgers cost $125.82.Find the price of one b urger and one order of fries .
1 answer:
Answer:
Burgers - $8.29 and fries - $4.39 Step-by-step explanation:
<u>Let burgers - b, fries - f</u>
8b + 3f = 79.49 12b + 6f = 125.82 <u>Double the first equation and subtract the second equation:</u>
16b + 6f - 12b - 6f = 2(79.49) - 125.82 4b = 33.16 b = 33.16/4 b = 8.29 <u>Find f:</u>
8(8.29) + 3f = 79.49 3f = 79.49 - 66.32 3f = 13.17 f = 13.17/3 f = 4.39
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