BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

IF Y-X <0 then

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 416
Joined: Wed Oct 03, 2007 9:08 am
Thanked: 10 times
Followed by:1 members

IF Y-X <0 then

by gmatrant » Sat Sep 06, 2008 7:20 am
If y-x <0 then
A. x>y
B. Both x and y are positive
C. Only one of the two is negative
D. x < y
E. None of the above.

Ans : E, how come shouldnt it be A.
Top
Source: — Problem Solving |
Legendary Member
Posts: 1153
Joined: Wed Jun 20, 2007 6:21 am
Thanked: 146 times
Followed by:2 members

Re: IF Y-X <0 then

by parallel_chase » Sat Sep 06, 2008 9:53 am
gmatrant wrote:If y-x <0 then
A. x>y
B. Both x and y are positive
C. Only one of the two is negative
D. x < y
E. None of the above.

Ans : E, how come shouldnt it be A.
This is a must be true question. Therefore, the answer option should hold true for all cases.

A. x>y

y=2, x =4

2-4 = -2<0. Eliminate.

B. Both x and y are positive
Both positive holds true for above case,

y=-2, x=2

-2 - (+2) = -4<0. Eliminate.

C. Only one of the two is negative

after looking at above cases we can Eliminate this as well.

D. x < y

y=-3, x=-6
-6-(-3) = -6+3 = -3<0. Eliminate.

E. None of the above.

Since we are only left with this option. Answer is E.


Hope its clear.
Top

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 2623
Joined: Mon Jun 02, 2008 3:17 am
Location: Montreal
Thanked: 1090 times
Followed by:355 members
GMAT Score:780

by Ian Stewart » Sat Sep 06, 2008 10:55 am
The answer is certainly A; just add x to both sides of the inequality. Where is the question from?
Top
Master | Next Rank: 500 Posts
Posts: 165
Joined: Wed May 28, 2008 11:25 pm
Thanked: 9 times
GMAT Score:730

by sumithshah » Sat Sep 06, 2008 11:05 am
Your reasoning appears wrong!

You are saying :

For A, X>Y

y=2, x =4

2-4 = -2<0. Eliminate - why eliminate? This is in accordance with the given condition
Top
Legendary Member
Posts: 1153
Joined: Wed Jun 20, 2007 6:21 am
Thanked: 146 times
Followed by:2 members

by parallel_chase » Sat Sep 06, 2008 11:08 am
sumithshah wrote:Your reasoning appears wrong!

You are saying :

For A, X>Y

y=2, x =4

2-4 = -2<0. Eliminate - why eliminate? This is in accordance with the given condition
Absolutely Right!

Lesson learnt. Just have to be bit more careful the next time.
Top
Master | Next Rank: 500 Posts
Posts: 165
Joined: Wed May 28, 2008 11:25 pm
Thanked: 9 times
GMAT Score:730

by sumithshah » Sat Sep 06, 2008 11:10 am
but then still doesn't solve the problem - the OA is E! or the OA is wrong.

where did you get this question from @ the guy who started this thread
Top
Newbie | Next Rank: 10 Posts
Posts: 1
Joined: Sat Sep 06, 2008 12:13 pm

by bhamav » Sat Sep 06, 2008 1:17 pm
My vote is for A. There's no way that I can deduce E.
Top
User avatar
Master | Next Rank: 500 Posts
Posts: 172
Joined: Wed Jul 09, 2008 3:35 am
Thanked: 3 times
Followed by:1 members
GMAT Score:610

Too Easy

by karthikgmat » Sat Sep 06, 2008 9:47 pm
Its very easy question to be answered.. Even a child answers it isn't it?
A is an apt choice.
Top
Newbie | Next Rank: 10 Posts
Posts: 4
Joined: Wed Nov 28, 2007 3:42 am
Location: Mumbai

by rajasiddarth » Sat Sep 06, 2008 10:05 pm
to SumitShah!!!!!

y-x<0

y=2, x=4

-2<0

So, the condition is true.. thn how can you eliminate A??
Top
Master | Next Rank: 500 Posts
Posts: 347
Joined: Mon Aug 04, 2008 1:42 pm
Thanked: 1 times

by Stockmoose16 » Tue Sep 09, 2008 3:35 pm
I think the answer is A, too.
Top
Master | Next Rank: 500 Posts
Posts: 416
Joined: Wed Oct 03, 2007 9:08 am
Thanked: 10 times
Followed by:1 members

by gmatrant » Tue Sep 09, 2008 6:41 pm
The question was given to me by a friend of mine.. sorry not sure from where..
Top
Post new topic Post Reply
• Page 1 of 1