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If 5 burgers and 4 orders of fries cost $30.76 and 8 burgers and 6 orders of fries cost $48.28, what is the cost of a burger and what is the cost of an order of fries?​

 Sep 7, 2020
 #1
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5b + 4f = 3076

8b + 6f = 4828     Multiply first equation by -1.5

-7.5 b - 6f = -4614   Now add 2nd and 3rd equations.....solve for b     Then sub this value

of b into one of the equations to calculate f

 Sep 7, 2020

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