BTGModeratorVI wrote: ↑Thu Jul 23, 2020 6:33 am
Is x less than y?
(1) x - y + 1 < 0
(2) x - y - 1 < 0
Answer:
A
Source: Official guide
Target question: Is x < y?
Statement 1: x-y+1<0
Add y to both sides to get
x+1 < y
Since x <
x + 1, we can write: x <
x+1 < y
From this, we can definitely see that
x < y
So, statement 1 is SUFFICIENT
Statement 2: x - y - 1 < 0
Add y to both sides to get
x - 1 < y
Since
x - 1 < x,
We can see that y and x are both greater than
x - 1, but we can't tell whether
x < y
So, statement 2 is NOT SUFFICIENT
Answer: A
Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
