BTGModeratorVI wrote: ↑Mon May 25, 2020 7:30 am
If y ≠ 0, what is the value of x/y?
(1) x = 2y
(2) x = y + 2
Answer:
A
Source: GMAT prep
Target question: What is the value of x/y?
Statement 1: x = 2y
Divide both sides by y to get:
x/y = 2
Since we can answer the
target question with certainty, statement 1 is SUFFICIENT
Statement 2: x = y + 2
You might automatically recognize that there is no way to use this information to determine the value of x/y.
If you don't recognize this, consider these two cases that satisfy statement 2:
Case a: x = 3 and y = 1. In this case, the answer to the target question is
x/y = 3/1 = 3
Case b: x = 4 and y = 2. In this case, the answer to the target question is
x/y = 4/2 = 2
Since we cannot answer the
target question with certainty, statement 2 is NOT SUFFICIENT
Answer: A
Cheers,
Brent
