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2

Set 2: Systems Of Equations (Advanced)

Explanation

Answer: C

PROBLEM

Solve: 2x + 4y = 30, x + 5y = 27. Find y.

Solve: 2x + 4y = 30, x + 5y = 27. Find y.

A.

3

B.

2

C.

4

✓ Correct
D.

5

Detailed Explanation

Choice C is the best answer. Using elimination or substitution: y = 4

Why others are wrong:
A: 3 is incorrect because it does not satisfy the equation.
B: 2 is incorrect because it does not satisfy the equation.
D: 5 is incorrect because it does not satisfy the equation.
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