SAT Math Practice Question #21136 - SATify | SATify

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SAT Math Practice Question #21136 - SATify | SATify

#21136

equations

algebra

medium

90 sec

$X = Y (Z - \frac{1}{2} W)$
The given equation relates the positive numbers $X$ , $Y$ , $Z$ , and $W$ . Which equation correctly expresses $W$ in terms of $X$ , $Y$ , and $Z$ ?

A.

$W = 2 Z - \frac{X}{Y}$

B.

$W = 2 Z - \frac{2 X}{Y}$

C.

$W = \frac{2 X}{Y} - 2 Z$

D.

$W = 2 (Z - \frac{X}{Y})$