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

It is currently 21 Aug 2014, 16:17

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 320 people attended the wedding and 200 attendees drank

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Status: Working hard to score better on GMAT
Joined: 02 Oct 2012
Posts: 92
Location: Nepal
Concentration: Finance, Entrepreneurship
GPA: 3.83
WE: Accounting (Consulting)
Followers: 0

Kudos [?]: 41 [0], given: 23

If 320 people attended the wedding and 200 attendees drank [#permalink] New post 21 May 2013, 19:33
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

100% (02:42) correct 0% (00:00) wrong based on 17 sessions
If 320 people attended the wedding and 200 attendees drank wine, how many attendees drank neither beer nor wine?

(1) There were the same number of beer drinkers as nondrinkers.
(2) The same number of people drank only beer as drank both beer and wine.

Sorry for the inconvenience I do not have the OA..... :wink:
_________________

Do not forget to hit the Kudos button on your left if you find my post helpful.

Cornell-Johnson Thread Master
User avatar
Joined: 04 Mar 2013
Posts: 63
GMAT 1: 770 Q50 V44
GPA: 3.66
WE: Operations (Manufacturing)
Followers: 2

Kudos [?]: 35 [0], given: 25

Reviews Badge
Re: If 320 people attended the wedding and 200 attendees drank [#permalink] New post 21 May 2013, 20:04
I Option A gives us that the no. of people who drink beer is the same as non-drinkers. So there are 160 beer drinker and same no. of non drinkers. We cannot judge the no. of people who neither drink beer or wine as all of these 160 non-beer drinkers could have wine, thereby leaving 0 people who dont have both drinks. NOT SUFFICIENT

II Option B gives us that there are the same no. of only beer drinkers as the no. of drinker of both beer and wine. But, there could be 10 people who drink only beer or there could be 120 and the same no. of people drinking both the beverages

Both taken together gives us that there are 160 people who drink beer. Out of them 80 drink only beer so the other 80 drink both beer and wine. So the no. of guys drinking neither is 320-(160+200-80) So the correct answer will be C
_________________

When you feel like giving up, remember why you held on for so long in the first place.

Director
Director
avatar
Joined: 24 Aug 2009
Posts: 510
Schools: Harvard, Columbia, Stern, Booth, LSB,
Followers: 9

Kudos [?]: 362 [0], given: 241

Re: If 320 people attended the wedding and 200 attendees drank [#permalink] New post 21 May 2013, 20:55
If 320 people attended the wedding and 200 attendees drank wine, how many attendees drank neither beer nor wine?
(1) There were the same number of beer drinkers as nondrinkers.
(2) The same number of people drank only beer as drank both beer and wine.


As per Set theory, we can write -
Total no of Attendees= No of people drinking only Wine+ No of people drinking only BEER - No of people drinking both Wine & Beer + No of people drinking None
320= 200 + Beer only - Both + None
120 = Beer only - Both + None -----(Equation 1)

We need to find the value of NONE
Statement 1- Beer only = None
By using this info & equation 1 we can not find the value of None.
Thus Insufficient

Statement 1- Beer only = Both
By using this info & equation 1 we can find the value of None.
Thus Sufficient

So the answer for this question has to be B.

Hope this detailed explanation will help many.

Fame
_________________

If you like my Question/Explanation or the contribution, Kindly appreciate by pressing KUDOS.
Kudos always maximizes GMATCLUB worth
-Game Theory

If you have any question regarding my post, kindly pm me or else I won't be able to reply

Manager
Manager
avatar
Status: Working hard to score better on GMAT
Joined: 02 Oct 2012
Posts: 92
Location: Nepal
Concentration: Finance, Entrepreneurship
GPA: 3.83
WE: Accounting (Consulting)
Followers: 0

Kudos [?]: 41 [0], given: 23

Re: If 320 people attended the wedding and 200 attendees drank [#permalink] New post 21 May 2013, 21:08
fameatop wrote:
If 320 people attended the wedding and 200 attendees drank wine, how many attendees drank neither beer nor wine?
(1) There were the same number of beer drinkers as nondrinkers.
(2) The same number of people drank only beer as drank both beer and wine.


As per Set theory, we can write -
Total no of Attendees= No of people drinking only Wine+ No of people drinking only BEER - No of people drinking both Wine & Beer + No of people drinking None
320= 200 + Beer only - Both + None
120 = Beer only - Both + None -----(Equation 1)

We need to find the value of NONE
Statement 1- Beer only = None
By using this info & equation 1 we can not find the value of None.
Thus Insufficient

Statement 1- Beer only = Both
By using this info & equation 1 we can find the value of None.
Thus Sufficient

So the answer for this question has to be B.

Hope this detailed explanation will help many.

Fame


Your equation is wrong as indicated by red part.....Make sure of it
Correct one is:
Total = Beer dinker + wine drinker - both + Neither
_________________

Do not forget to hit the Kudos button on your left if you find my post helpful.

Director
Director
avatar
Joined: 24 Aug 2009
Posts: 510
Schools: Harvard, Columbia, Stern, Booth, LSB,
Followers: 9

Kudos [?]: 362 [0], given: 241

Re: If 320 people attended the wedding and 200 attendees drank [#permalink] New post 21 May 2013, 21:11
I think, I am too tired. Pardon for the mistake
_________________

If you like my Question/Explanation or the contribution, Kindly appreciate by pressing KUDOS.
Kudos always maximizes GMATCLUB worth
-Game Theory

If you have any question regarding my post, kindly pm me or else I won't be able to reply

Manager
Manager
avatar
Status: Working hard to score better on GMAT
Joined: 02 Oct 2012
Posts: 92
Location: Nepal
Concentration: Finance, Entrepreneurship
GPA: 3.83
WE: Accounting (Consulting)
Followers: 0

Kudos [?]: 41 [0], given: 23

Re: If 320 people attended the wedding and 200 attendees drank [#permalink] New post 21 May 2013, 21:12
I am confused becasue of the wording of the first statement. What does non drinker mean? Is it the one who does not drink beer or it is referring to the people who drink neither of the drink.

Interpretation of this statement in different ways gives two different answer....

Someone shed some light....

Regards
Atal Pandit
_________________

Do not forget to hit the Kudos button on your left if you find my post helpful.

Expert Post
1 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 19041
Followers: 3363

Kudos [?]: 24469 [1] , given: 2680

Re: If 320 people attended the wedding and 200 attendees drank [#permalink] New post 22 May 2013, 02:25
1
This post received
KUDOS
Expert's post
If 320 people attended the wedding and 200 attendees drank wine, how many attendees drank neither beer nor wine?

{Total} = {Wine} + {Beer} - {Both} + {Neither}
320 = 200 + {Beer} - {Both} + {Neither}
120 = {Beer} - {Both} + {Neither}
{Neither} = ?

(1) There were the same number of beer drinkers as nondrinkers:
{Beer} = {Neither}
120 = {Neither} - {Both} + {Neither}
120 = 2*{Neither} - {Both}.
Two unknowns. Not sufficient.

(2) The same number of people drank only beer as drank both beer and wine:
{Beer} - {Both} = {Both}
{Beer} = 2*{Both}
120 = 2*{Both} - {Both} + {Neither}
120 = {Both} + {Neither}.
Two unknowns. Not sufficient.

(1)+(2) We have that 120 = 2*{Neither} - {Both} and 120 = {Both} + {Neither}. We have two unknowns and two linear equation, thus we can solve. Sufficient.

Answer: C.

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

Manager
Manager
avatar
Status: Working hard to score better on GMAT
Joined: 02 Oct 2012
Posts: 92
Location: Nepal
Concentration: Finance, Entrepreneurship
GPA: 3.83
WE: Accounting (Consulting)
Followers: 0

Kudos [?]: 41 [0], given: 23

Re: If 320 people attended the wedding and 200 attendees drank [#permalink] New post 22 May 2013, 05:06
Bunuel wrote:
If 320 people attended the wedding and 200 attendees drank wine, how many attendees drank neither beer nor wine?

{Total} = {Wine} + {Beer} - {Both} + {Neither}
320 = 200 + {Beer} - {Both} + {Neither}
120 = {Beer} - {Both} + {Neither}
{Neither} = ?

(1) There were the same number of beer drinkers as nondrinkers:
{Beer} = {Neither}
120 = {Neither} - {Both} + {Neither}
120 = 2*{Neither} - {Both}.
Two unknowns. Not sufficient.

(2) The same number of people drank only beer as drank both beer and wine:
{Beer} - {Both} = {Both}
{Beer} = 2*{Both}
120 = 2*{Both} - {Both} + {Neither}

120 = {Both} + {Neither}.
Two unknowns. Not sufficient.

(1)+(2) We have that 120 = 2*{Neither} - {Both} and 120 = {Both} + {Neither}. We have two unknowns and two linear equation, thus we can solve. Sufficient.

Answer: C.

Hope it's clear.


Your solution is awesome..... Could you elaborate the red part?
_________________

Do not forget to hit the Kudos button on your left if you find my post helpful.

Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 19041
Followers: 3363

Kudos [?]: 24469 [0], given: 2680

Re: If 320 people attended the wedding and 200 attendees drank [#permalink] New post 22 May 2013, 05:14
Expert's post
atalpanditgmat wrote:
Bunuel wrote:
If 320 people attended the wedding and 200 attendees drank wine, how many attendees drank neither beer nor wine?

{Total} = {Wine} + {Beer} - {Both} + {Neither}
320 = 200 + {Beer} - {Both} + {Neither}
120 = {Beer} - {Both} + {Neither}
{Neither} = ?

(1) There were the same number of beer drinkers as nondrinkers:
{Beer} = {Neither}
120 = {Neither} - {Both} + {Neither}
120 = 2*{Neither} - {Both}.
Two unknowns. Not sufficient.

(2) The same number of people drank only beer as drank both beer and wine:
{Beer} - {Both} = {Both}
{Beer} = 2*{Both}
120 = 2*{Both} - {Both} + {Neither}

120 = {Both} + {Neither}.
Two unknowns. Not sufficient.

(1)+(2) We have that 120 = 2*{Neither} - {Both} and 120 = {Both} + {Neither}. We have two unknowns and two linear equation, thus we can solve. Sufficient.

Answer: C.

Hope it's clear.


Your solution is awesome..... Could you elaborate the red part?


The second statement states that {Beer} - {Both} = {Both} thus {Beer} = 2*{Both}. Now, substitute {Beer} = 2*{Both} into 120 = {Beer} - {Both} + {Neither} to get 120 = 2*{Both} - {Both} + {Neither}.

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

Manager
Manager
User avatar
Joined: 24 Apr 2013
Posts: 56
Schools: Duke '16
Followers: 0

Kudos [?]: 2 [0], given: 76

Re: If 320 people attended the wedding and 200 attendees drank [#permalink] New post 22 May 2013, 14:31
Bunuel wrote:
If 320 people attended the wedding and 200 attendees drank wine, how many attendees drank neither beer nor wine?

{Total} = {Wine} + {Beer} - {Both} + {Neither}
320 = 200 + {Beer} - {Both} + {Neither}
120 = {Beer} - {Both} + {Neither}
{Neither} = ?

(1) There were the same number of beer drinkers as nondrinkers:
{Beer} = {Neither}
120 = {Neither} - {Both} + {Neither}
120 = 2*{Neither} - {Both}.
Two unknowns. Not sufficient.

(2) The same number of people drank only beer as drank both beer and wine:
{Beer} - {Both} = {Both}
{Beer} = 2*{Both}
120 = 2*{Both} - {Both} + {Neither}
120 = {Both} + {Neither}.
Two unknowns. Not sufficient.

(1)+(2) We have that 120 = 2*{Neither} - {Both} and 120 = {Both} + {Neither}. We have two unknowns and two linear equation, thus we can solve. Sufficient.

Answer: C.

Hope it's clear.


could you solve it for me please so i can see how this works out
Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 19041
Followers: 3363

Kudos [?]: 24469 [0], given: 2680

Re: If 320 people attended the wedding and 200 attendees drank [#permalink] New post 22 May 2013, 14:43
Expert's post
madzstar wrote:
Bunuel wrote:
If 320 people attended the wedding and 200 attendees drank wine, how many attendees drank neither beer nor wine?

{Total} = {Wine} + {Beer} - {Both} + {Neither}
320 = 200 + {Beer} - {Both} + {Neither}
120 = {Beer} - {Both} + {Neither}
{Neither} = ?

(1) There were the same number of beer drinkers as nondrinkers:
{Beer} = {Neither}
120 = {Neither} - {Both} + {Neither}
120 = 2*{Neither} - {Both}.
Two unknowns. Not sufficient.

(2) The same number of people drank only beer as drank both beer and wine:
{Beer} - {Both} = {Both}
{Beer} = 2*{Both}
120 = 2*{Both} - {Both} + {Neither}
120 = {Both} + {Neither}.
Two unknowns. Not sufficient.

(1)+(2) We have that 120 = 2*{Neither} - {Both} and 120 = {Both} + {Neither}. We have two unknowns and two linear equation, thus we can solve. Sufficient.

Answer: C.

Hope it's clear.


could you solve it for me please so i can see how this works out


Sum the equations: 240 = 3*{Neither} --> {Neither} = 80.

Hope it helps.
_________________

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 320 people attended the wedding and 200 attendees drank   [#permalink] 22 May 2013, 14:43
    Similar topics Author Replies Last post
Similar
Topics:
17 Experts publish their posts in the topic Unlike Acanthus, whose wedding was sparsely attended being Vercules 11 05 May 2013, 10:10
Of the people who attended a company meeting, 60% were Smita04 3 01 Feb 2012, 22:09
5 Q) In september of last year, the number of people attending gargnakul123 4 28 Jan 2012, 22:59
A stadium manager expected 13,200 spectators to attend a ezinis 3 30 Dec 2010, 21:10
30 people in total attended an office party for a applecrisp 2 09 Dec 2007, 12:50
Display posts from previous: Sort by

If 320 people attended the wedding and 200 attendees drank

  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®.