Question #7efe5495 - SAT Suite Question Bank

ID: 7efe5495

Modded SAT Question Bank by Abdullah Mallik

$y equals 3 x$

$2 x + y = 12$

The solution to the given system of equations is $(x, y)$ . What is the value of $5 x$ ?

$24$
$15$
$12$
$5$

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Correct Answer: C

Rationale

Choice C is correct. It's given by the first equation in the system that $y equals 3 x$ . Substituting $3 x$ for $y$ in the equation $2 x + y = 12$ yields $2 x + 3 x = 12$ , or $5 x equals 12$ .

Choice A is incorrect and may result from conceptual or calculation errors.

Choice B is incorrect and may result from conceptual or calculation errors.

Choice D is incorrect and may result from conceptual or calculation errors.

Question Difficulty: Medium