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

It is currently 23 Oct 2014, 13:32

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 1 + 1/x = 2 - 2/x, then x =

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
1 KUDOS received
Manager
Manager
avatar
Joined: 02 Dec 2012
Posts: 178
Followers: 2

Kudos [?]: 429 [1] , given: 0

If 1 + 1/x = 2 - 2/x, then x = [#permalink] New post 20 Dec 2012, 08:34
1
This post received
KUDOS
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

90% (01:35) correct 10% (00:43) wrong based on 241 sessions
If 1 + 1/x = 2 - 2/x, then x =

(A) -1
(B) 1/3
(C) 2/3
(D) 2
(E) 3
[Reveal] Spoiler: OA
Expert Post
2 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 23398
Followers: 3611

Kudos [?]: 28840 [2] , given: 2854

Re: If 1 + 1/x = 2 - 2/x, then x = [#permalink] New post 20 Dec 2012, 08:36
2
This post received
KUDOS
Expert's post
Intern
Intern
User avatar
Joined: 24 Apr 2012
Posts: 48
Followers: 0

Kudos [?]: 15 [0], given: 1

Re: If 1 + 1/x = 2 - 2/x, then x = [#permalink] New post 21 Dec 2012, 03:14
Ans:

1+1/x=2-2/x, getting x on one side, 1/x+2/x=2-1, 3/x=1, x=3

Therefore answer is (E).
_________________

www.mnemoniceducation.com

TURN ON YOUR MINDS!!!

Manager
Manager
User avatar
Joined: 03 Aug 2011
Posts: 223
Location: Bulgaria
GMAT 1: 640 Q44 V34
GPA: 3.7
WE: Project Management (Energy and Utilities)
Followers: 8

Kudos [?]: 24 [0], given: 280

GMAT ToolKit User
Re: If 1 + 1/x = 2 - 2/x, then x = [#permalink] New post 11 Feb 2013, 08:57
Am I the only one, who does not understand why this questions is rated in OG12 as Hard? I guess I still am not a Quant-Killer, but this question seems to be quite simple and straightforward.

Thanks!
_________________

Thank you very much for reading this post till the end! Kudos?

Expert Post
1 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 23398
Followers: 3611

Kudos [?]: 28840 [1] , given: 2854

Re: If 1 + 1/x = 2 - 2/x, then x = [#permalink] New post 11 Feb 2013, 09:00
1
This post received
KUDOS
Expert's post
bgpower wrote:
Am I the only one, who does not understand why this questions is rated in OG12 as Hard? I guess I still am not a Quant-Killer, but this question seems to be quite simple and straightforward.

Thanks!


I agree with you. From my point of view this questions is sub-600 level.
_________________

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

1 KUDOS received
Current Student
avatar
Joined: 19 Jan 2013
Posts: 28
Followers: 0

Kudos [?]: 13 [1] , given: 1

Re: If 1 + 1/x = 2 - 2/x, then x = [#permalink] New post 24 Jul 2013, 14:32
1
This post received
KUDOS
To add to your point, I've noticed that in the last pages of the OG hidden among the 700+ level questions are some really easy 600 or less level questions. Anyone know why that is the case? The guide states that the questions are organized by difficulty yet in the last 40 questions, the guide has some very very easy questions.
Intern
Intern
avatar
Joined: 25 Oct 2013
Posts: 2
Followers: 0

Kudos [?]: 1 [0], given: 2

GMAT ToolKit User
Re: If 1 + 1/x = 2 - 2/x, then x = [#permalink] New post 12 Nov 2013, 05:55
Bunuel wrote:
Walkabout wrote:
If 1 + 1/x = 2 - 2/x, then x =

(A) -1
(B) 1/3
(C) 2/3
(D) 2
(E) 3


1 + \frac{1}{x} = 2 - \frac{2}{x} --> \frac{1}{x}+\frac{2}{x}=1 --> \frac{3}{x} = 1 --> x = 3.

Answer: E.


What did you do at the last step when you had \frac{3}{x} = 1 --> x = 3?
How did you get rid of the 1 and the fraction?
Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 23398
Followers: 3611

Kudos [?]: 28840 [0], given: 2854

Re: If 1 + 1/x = 2 - 2/x, then x = [#permalink] New post 12 Nov 2013, 06:14
Expert's post
Markster wrote:
Bunuel wrote:
Walkabout wrote:
If 1 + 1/x = 2 - 2/x, then x =

(A) -1
(B) 1/3
(C) 2/3
(D) 2
(E) 3


1 + \frac{1}{x} = 2 - \frac{2}{x} --> \frac{1}{x}+\frac{2}{x}=1 --> \frac{3}{x} = 1 --> x = 3.

Answer: E.


What did you do at the last step when you had \frac{3}{x} = 1 --> x = 3?
How did you get rid of the 1 and the fraction?


Multiply both sides by x: \frac{3}{x}*x = 1*x --> 3= x.

Hope it's clear.
_________________

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 1 + 1/x = 2 - 2/x, then x =   [#permalink] 12 Nov 2013, 06:14
    Similar topics Author Replies Last post
Similar
Topics:
|x+1| + |x+2| + | x-1|= 20 sandip66612 3 30 Jul 2013, 20:26
2 Experts publish their posts in the topic Is x>3 ? 1. (x-1)(x-2)(x-3)>0 2. x>1 parama79 12 16 Oct 2011, 16:14
If x ≠ 0, then (x + 1/x)^2 - (x - 1/x)^2 = A. 1/x M8 2 24 Apr 2006, 11:52
Is 1+x+x^2+x^3+x^4 > 1/(1-x) ? 1). x > 0 2). x < 1 TeHCM 6 04 Feb 2006, 22:13
If (-1)*X=1,which of the following is an integer? 1)X/(2+X) Yurik79 4 24 Jan 2006, 23:34
Display posts from previous: Sort by

If 1 + 1/x = 2 - 2/x, then x =

  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®.