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natta225 [31]
2 years ago
7

Write the number of the word problem that match the system of equations illustrated:

Mathematics
1 answer:
uranmaximum [27]2 years ago
4 0

5b + 9s = 28.75

10b + 10s = 47.5

Multiply all terms in equation #1 by 2.

10b + 18s = 57.5

Subtract both equations from each-other.

8s = 10

Divide both sides by 8.

s = 1.25

The cost of a soda is 1.25, and because we know this, we can plug it into either equation to solve for the cost of b, a burger.

5b + 9(1.25) = 28.75

5b + 11.25 = 28.75

Subtract 11.25 from both sides.

5b = 17.5

Divide both sides by 5.

b = 3.5

<h3>The price of a soda is $1.25.</h3><h3>The price of a burger is $3.5.</h3>
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