Question 9 Answer & Explanation - SAT Algebra

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algebra

If $x/y = 2$ and $x + y = 12$ , what is $x$ ?

Correct Answer: B

Choice Choice B is the correct answer.

Substitute: $x = 2y$
Plug in: $2y + y = 12 \rightarrow 3y = 12 \rightarrow y = 4$
Find x: $x = 2(4) = 8$

Choice Choice A is incorrect because this is y.

Choice Choice C is incorrect because calculation error.

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