Find all School-related info fast with the new School-Specific MBA Forum

It is currently 22 Sep 2014, 04:33

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

If x#-y is (x-y)/(x+y)>1?

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
3 KUDOS received
Senior Manager
Senior Manager
avatar
Joined: 16 Apr 2009
Posts: 341
Followers: 1

Kudos [?]: 49 [3] , given: 14

GMAT Tests User
If x#-y is (x-y)/(x+y)>1? [#permalink] New post 24 Sep 2009, 17:16
3
This post received
KUDOS
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  65% (hard)

Question Stats:

53% (01:57) correct 47% (01:32) wrong based on 47 sessions
If x#-y is (x - y)/(x + y)>1?

(1) x > 0
(2) y < 0

OPEN DISCUSSION OF THIS QUESTION IS HERE: if-x-y-is-x-y-x-y-1-1-x-0-2-y-96090.html
[Reveal] Spoiler: OA

_________________

Always tag your question


Last edited by Bunuel on 09 Oct 2013, 08:00, edited 1 time in total.
Renamed the topic, edited the question and added the OA.
Kaplan GMAT Prep Discount CodesKnewton GMAT Discount CodesGMAT Pill GMAT Discount Codes
1 KUDOS received
Senior Manager
Senior Manager
avatar
Joined: 01 Mar 2009
Posts: 372
Location: PDX
Followers: 6

Kudos [?]: 66 [1] , given: 24

GMAT Tests User
Re: (x-y)/ (x+y) < 1 [#permalink] New post 24 Sep 2009, 19:51
1
This post received
KUDOS
I think it is B.

x-y < x+y => y>0

So stmt 2 gives the answer
_________________

In the land of the night, the chariot of the sun is drawn by the grateful dead

1 KUDOS received
Manager
Manager
avatar
Joined: 04 Sep 2009
Posts: 53
WE 1: Real estate investment consulting
Followers: 1

Kudos [?]: 16 [1] , given: 7

Re: (x-y)/ (x+y) < 1 [#permalink] New post 24 Sep 2009, 22:26
1
This post received
KUDOS
seems like an E to me

Stament 1 does not allow for 1 answer:

X = 5, Y may be positive, say 2, then 5-2 / 5+2 < 1, while if Y= -2, then 5-(-2) /5-2 > 1

Same for statement 2.

Both combined allow division by 0: X=1, Y=-1, then 1-(-1) /1-1, which also does not give a clear answer.

even if you take X=2, Y=-1, then get 2-(-1) / 2-1 > 1, while if X=1, Y=-3, then 1-(-3) / 1-3 < 1

Posted from my mobile device Image
Manager
Manager
avatar
Joined: 14 Dec 2008
Posts: 171
Followers: 1

Kudos [?]: 14 [0], given: 39

GMAT Tests User
Re: (x-y)/ (x+y) < 1 [#permalink] New post 25 Sep 2009, 06:53
(x-y)/ (x+y) < 1 reduces to y>0? so my ans = B
2 KUDOS received
Senior Manager
Senior Manager
avatar
Joined: 23 Jun 2009
Posts: 359
Location: Turkey
Schools: UPenn, UMich, HKS, UCB, Chicago
Followers: 5

Kudos [?]: 95 [2] , given: 60

GMAT Tests User
Re: (x-y)/ (x+y) < 1 [#permalink] New post 25 Sep 2009, 12:51
2
This post received
KUDOS
1) insuff.
4 cases.
a)y>0 and y<x answer is yes
b)y>0 and y>x answer is yes
c)y<0 and absolute value y>x answer is yes
d)y<0 and absolute value y<x answer is no
2)insuff
4 cases
a and b is like the above where is x>0 and answer is yes
c)x<0 and y<x answer is yes
d)x<0 and y>x answer is no

together
x>0 and y<0
insuff
depends on the comparison between the absolute value of y and x.
Intern
Intern
avatar
Joined: 01 May 2009
Posts: 23
Followers: 0

Kudos [?]: 0 [0], given: 2

Re: (x-y)/ (x+y) < 1 [#permalink] New post 27 Sep 2009, 03:00
I would go for E unless statement 2 states Y is < -1, pls post OA
Manager
Manager
User avatar
Joined: 25 Mar 2009
Posts: 57
Followers: 1

Kudos [?]: 10 [0], given: 9

Re: (x-y)/ (x+y) < 1 [#permalink] New post 27 Sep 2009, 08:39
(x-y)/(x+y)=(x+y-2y)/(x+y)=1-2y/(x+y) <1 ?

1, x>0, can't find the sign for y/(x+y), insuff
2, y<0, -2y>0 but we don't know whether x+y post or neg insuff

both 1&2, x>0 & y<0 but we don't know x+y>0 or not, insuff

E for me
Intern
Intern
avatar
Joined: 30 Aug 2009
Posts: 13
Followers: 0

Kudos [?]: 0 [0], given: 0

Re: (x-y)/ (x+y) < 1 [#permalink] New post 02 Oct 2009, 03:58
Sometimes its better to put values and check :-D

X=2,
Y=-3

This will the condition true

However,

X=3,
Y=-2

This will make it false.

E :-D
Manager
Manager
avatar
Joined: 05 Jul 2009
Posts: 182
Followers: 1

Kudos [?]: 14 [0], given: 5

Re: (x-y)/ (x+y) < 1 [#permalink] New post 23 Oct 2009, 15:30
Putting numbers is actually a cool strategy.......but it is time consuming....any shortcut way to solve this problem?
SVP
SVP
User avatar
Joined: 09 Sep 2013
Posts: 2450
Followers: 198

Kudos [?]: 38 [0], given: 0

Premium Member
Re: Is (x-y)/ (x+y) < 1 1) x > 0 2) y < 0 [#permalink] New post 09 Oct 2013, 07:53
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources

Expert Post
1 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 23509
Followers: 3512

Kudos [?]: 26647 [1] , given: 2714

Re: If x#-y is (x-y)/(x+y)>1? [#permalink] New post 09 Oct 2013, 08:01
1
This post received
KUDOS
Expert's post
If x\neq{-y} is \frac{x-y}{x+y}>1?

Is \frac{x-y}{x+y}>1? --> Is 0>1-\frac{x-y}{x+y}? --> Is 0>\frac{x+y-x+y}{x+y}? --> Is 0>\frac{2y}{x+y}?

(1) x>0 --> Not sufficient.

(2) y<0 --> Not sufficient.

(1)+(2) x>0 and y<0 --> numerator (y) is negative, but we cannot say whether the denominator {positive (x)+negative (y)} is positive or negative. Not sufficient.

Answer: E.

OPEN DISCUSSION OF THIS QUESTION IS HERE: if-x-y-is-x-y-x-y-1-1-x-0-2-y-96090.html
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Re: If x#-y is (x-y)/(x+y)>1?   [#permalink] 09 Oct 2013, 08:01
    Similar topics Author Replies Last post
Similar
Topics:
If x != -y, is x-y/x+y > 1 ? coldteleporter 5 28 Sep 2009, 15:51
2 If x not equal to -y, is (x-y)/(x+y) > 1 thinkblue 7 19 Apr 2009, 20:19
If x#-y, is x-y/x+y > 1? 1.) x > 0 2.) y < 0 These ConkergMat 1 02 Mar 2009, 17:51
If x is not equal to -y, is (x-y)/(x+y) > 1? Summer3 5 03 Apr 2007, 03:16
if xy>0 does (x-1)(y-1) >1 1) X+y=xy 2)x=y I know that vprabhala 2 24 Mar 2005, 16:39
Display posts from previous: Sort by

If x#-y is (x-y)/(x+y)>1?

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.