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Mashcka [7]
3 years ago
10

Two burgers and three small fries is 21.18. Four burgers and two small fries is 29.56 how much is one burger and one fries

Mathematics
1 answer:
lora16 [44]3 years ago
6 0

Answer: fries-$3.20, burger=$5.79

Step-by-step explanation:

1. form equations for each person

2. set them up one below the other

3. solve for one unknown

4. plug in that answer into one of the equations to get the other unknown

(f=fries, b=burger)

 21.18=2b+3f

29.56=4b+2f

-2(21.18=2b+3f)

 29.56=4b+2f  

-42.36=-4b-6f

29.56=4b+2f

 -12.8=-4f

   3.2=f

21.18=2b+3(3.2)

21.18=2b+9.6

-9.6         -9.6

11.58=2b

 5.79=b

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