B?
1) Compares only minimum values so x and y can be anything - NOT SUFF
2) Compares the max of x with the minimum of y and because the minimum of y is greater than the maximum of x, y > x SUFF
If a < x < b ....
This topic has expert replies
Source: Beat The GMAT — Data Sufficiency |
-
Stuart@KaplanGMAT
- GMAT Instructor
- Posts: 3225
- Joined: Tue Jan 08, 2008 2:40 pm
- Location: Toronto
- Thanked: 1710 times
- Followed by:614 members
- GMAT Score:800
Your posted answer is incorrect; the correct answer is (B).moonlite wrote:If a < x < b and c < y < d, is x < y?
(1) a < c
(2) b < c
(A) Please explain. Thanks.
From (1), we have no way to compare x and y.
However, from (2) we can write one giant inequality:
a < x < b < c < y < d,
clearly showing that x < y.
Stuart Kovinsky | Kaplan GMAT Faculty | Toronto
Kaplan Exclusive: The Official Test Day Experience | Ready to Take a Free Practice Test? | Kaplan/Beat the GMAT Member Discount
BTG100 for $100 off a full course
-
missrochelle
- Master | Next Rank: 500 Posts
- Posts: 117
- Joined: Wed Jun 09, 2010 7:02 am
On this problem, I tried to combine the inequality for statement 1:
lining it up this way
a < c
a < x
c < y
Is the rule that you can only line up going across not down? Just trying to get a surefire way to look at these and know when you can connect them and when you aren't supposed to. I connected them by adding to say 2a<2c<x<y. Clearly incorrect but not sure why.
lining it up this way
a < c
a < x
c < y
Is the rule that you can only line up going across not down? Just trying to get a surefire way to look at these and know when you can connect them and when you aren't supposed to. I connected them by adding to say 2a<2c<x<y. Clearly incorrect but not sure why.
