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

It is currently 27 Jul 2016, 21:09
GMAT Club Tests

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

The table below shows the result of survey of 100 students

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

1 KUDOS received
Director
Director
avatar
Joined: 21 Dec 2009
Posts: 591
Concentration: Entrepreneurship, Finance
Followers: 18

Kudos [?]: 597 [1] , given: 20

The table below shows the result of survey of 100 students [#permalink]

Show Tags

New post 06 Dec 2012, 05:16
1
This post received
KUDOS
3
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  75% (hard)

Question Stats:

55% (03:07) correct 45% (01:57) wrong based on 112 sessions

HideShow timer Statistics

Attachment:
Topics.png
Topics.png [ 3.78 KiB | Viewed 2312 times ]
The table attached shows the result of survey of 100 students who responded with “For” or “Against” or “Not sure” when asked about the Debate choice of the Topic A and Topic B. What was the number of students who responded “For” for both Topics?

(1) The number of students who did not respond “For” for either Topic was 40.
(2) The number of students who responded “Against” for both Topics was 20.
[Reveal] Spoiler: OA

_________________

KUDOS me if you feel my contribution has helped you.


Last edited by Bunuel on 06 Dec 2012, 05:52, edited 3 times in total.
Edited the question and the tags.
Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 34092
Followers: 6095

Kudos [?]: 76669 [0], given: 9978

Re: The table below shows the result of survey of 100 students [#permalink]

Show Tags

New post 06 Dec 2012, 06:06
Expert's post
Image
The table attached shows the result of survey of 100 students who responded with “For” or “Against” or “Not sure” when asked about the Debate choice of the Topic A and Topic B. What was the number of students who responded “For” for both Topics?

{Total # of students who responded "For"} = {"For" A} + {"For" B} - {"For" both};
{Total # of students who responded "For"} = 30 + 40 - {"For" both}
{"For" both} = 70 - {Total # of students who responded "For"}.

(1) The number of students who did not respond “For” for either Topic was 40 --> since 40 students did NOT respond "For", then the remaining 60 students DID respond "For" for either Topic, thus {Total # of students who responded "For"} = 60. Therefore, {"For" both} = 70 - 60 = 10. Sufficient.

(2) The number of students who responded “Against” for both Topics was 20. Not sufficient.

Answer: A.
_________________

New to the Math Forum?
Please read this: All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

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?
Extra-hard Quant Tests with Brilliant Analytics

Moderator
Moderator
User avatar
Joined: 01 Sep 2010
Posts: 2992
Followers: 691

Kudos [?]: 5568 [0], given: 968

Re: The table below shows the result of survey of 100 students [#permalink]

Show Tags

New post 06 Dec 2012, 07:26
Bunuel wrote:
Image
The table attached shows the result of survey of 100 students who responded with “For” or “Against” or “Not sure” when asked about the Debate choice of the Topic A and Topic B. What was the number of students who responded “For” for both Topics?

{Total # of students who responded "For"} = {"For" A} + {"For" B} - {"For" both};
{Total # of students who responded "For"} = 30 + 40 - {"For" both}
{"For" both} = 70 - {Total # of students who responded "For"}.

(1) The number of students who did not respond “For” for either Topic was 40 --> since 40 students did NOT respond "For", then the remaining 60 students DID respond "For" for either Topic, thus {Total # of students who responded "For"} = 60. Therefore, {"For" both} = 70 - 60 = 10. Sufficient.

(2) The number of students who responded “Against” for both Topics was 20. Not sufficient.

Answer: A.

Bunuel but the first statement could be solved by the unknown multiplier and a ratio strategy ?? I came to A with this logic or is wrong ??

Thanks
_________________

COLLECTION OF QUESTIONS AND RESOURCES
Quant: 1. ALL GMATPrep questions Quant/Verbal 2. Bunuel Signature Collection - The Next Generation 3. Bunuel Signature Collection ALL-IN-ONE WITH SOLUTIONS 4. Veritas Prep Blog PDF Version 5. MGMAT Study Hall Thursdays with Ron Quant Videos
Verbal:1. Verbal question bank and directories by Carcass 2. MGMAT Study Hall Thursdays with Ron Verbal Videos 3. Critical Reasoning_Oldy but goldy question banks 4. Sentence Correction_Oldy but goldy question banks 5. Reading-comprehension_Oldy but goldy question banks

Director
Director
avatar
Joined: 21 Dec 2009
Posts: 591
Concentration: Entrepreneurship, Finance
Followers: 18

Kudos [?]: 597 [0], given: 20

Re: The table below shows the result of survey of 100 students [#permalink]

Show Tags

New post 17 Dec 2012, 22:59
Carcas, can you please show how you applied the "ratio strategy"?
_________________

KUDOS me if you feel my contribution has helped you.

Moderator
Moderator
User avatar
Joined: 01 Sep 2010
Posts: 2992
Followers: 691

Kudos [?]: 5568 [0], given: 968

Re: The table below shows the result of survey of 100 students [#permalink]

Show Tags

New post 18 Dec 2012, 10:04
gmatbull wrote:
Carcas, can you please show how you applied the "ratio strategy"?



because you have (make the things simple) FOR 3x + 7x = 100 so your UM is 7x (70 of bunuel): with 7x we have not real number but 1) provide us with.

IF 7x is the total number of students AND 40 not respond so 60 respond. IF you have 7x = 60 (real number) you CAN calculate the number of student (remember: we are talking of integers, so even you have 14.5 is not possible, is a constraint not written but you have to take in account for). However, it depens a lot from the context.

\(BE careful\): this is totally an inference and intuitive approach, that come up after several time of study and that you develope instinctively. Similar native speakers have about SC
_________________

COLLECTION OF QUESTIONS AND RESOURCES
Quant: 1. ALL GMATPrep questions Quant/Verbal 2. Bunuel Signature Collection - The Next Generation 3. Bunuel Signature Collection ALL-IN-ONE WITH SOLUTIONS 4. Veritas Prep Blog PDF Version 5. MGMAT Study Hall Thursdays with Ron Quant Videos
Verbal:1. Verbal question bank and directories by Carcass 2. MGMAT Study Hall Thursdays with Ron Verbal Videos 3. Critical Reasoning_Oldy but goldy question banks 4. Sentence Correction_Oldy but goldy question banks 5. Reading-comprehension_Oldy but goldy question banks

VP
VP
User avatar
Status: Been a long time guys...
Joined: 03 Feb 2011
Posts: 1420
Location: United States (NY)
Concentration: Finance, Marketing
GPA: 3.75
Followers: 169

Kudos [?]: 1144 [0], given: 62

GMAT ToolKit User Premium Member
Re: The table below shows the result of survey of 100 students [#permalink]

Show Tags

New post 18 Dec 2012, 10:15
GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 09 Sep 2013
Posts: 10620
Followers: 495

Kudos [?]: 130 [0], given: 0

Premium Member
Re: The table below shows the result of survey of 100 students [#permalink]

Show Tags

New post 16 Jan 2014, 05:04
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

GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 09 Sep 2013
Posts: 10620
Followers: 495

Kudos [?]: 130 [0], given: 0

Premium Member
Re: The table below shows the result of survey of 100 students [#permalink]

Show Tags

New post 23 Oct 2015, 17:25
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

1 KUDOS received
Manager
Manager
avatar
Joined: 13 Sep 2015
Posts: 90
Location: United States
Concentration: Social Entrepreneurship, International Business
GMAT 1: 770 Q50 V45
GPA: 3.84
Followers: 2

Kudos [?]: 9 [1] , given: 0

Re: The table below shows the result of survey of 100 students [#permalink]

Show Tags

New post 06 Nov 2015, 17:09
1
This post received
KUDOS
1
This post was
BOOKMARKED
expand the tablet will lead fast and direct solution:

For only For both||| Against only Against both||| Not sure for only Not sure for neither|||

A 30-x x 40-y y 30-z z

B 40-x x 20-y y 40-z z

now it's very graphic:

the question is x=?

(1) not for either is 100-(30-x+x+40-x)=40

sufficient

(2) y=20

insufficient
Re: The table below shows the result of survey of 100 students   [#permalink] 06 Nov 2015, 17:09
    Similar topics Author Replies Last post
Similar
Topics:
3 Experts publish their posts in the topic The table above shows the responses of 100 consumers to a taste test i mayankgupta01 4 23 May 2016, 10:11
5 Experts publish their posts in the topic The table above shows the number of students in a certain high school Bunuel 7 26 Oct 2015, 10:07
3 Experts publish their posts in the topic The table above shows the distance, in kilometers, by the Bunuel 9 18 Sep 2012, 03:32
132 Experts publish their posts in the topic The table below shows the results of a survey of 100 voters samrand 29 14 Jan 2010, 12:15
8 Experts publish their posts in the topic The table above shows the morning schedule for train X. If sondenso 21 04 Oct 2009, 00:39
Display posts from previous: Sort by

The table below shows the result of survey of 100 students

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| 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®.