GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 16 Jan 2019, 10:27

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.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
  • The winning strategy for a high GRE score

     January 17, 2019

     January 17, 2019

     08:00 AM PST

     09:00 AM PST

    Learn the winning strategy for a high GRE score — what do people who reach a high score do differently? We're going to share insights, tips and strategies from data we've collected from over 50,000 students who used examPAL.
  • Free GMAT Strategy Webinar

     January 19, 2019

     January 19, 2019

     07:00 AM PST

     09:00 AM PST

    Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.

Some of the people in Town X are left-handed, some are tall

  post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Manager
Manager
avatar
Status: May The Force Be With Me (D-DAY 15 May 2012)
Joined: 06 Jan 2012
Posts: 214
Location: India
Concentration: General Management, Entrepreneurship
Reviews Badge
Some of the people in Town X are left-handed, some are tall  [#permalink]

Show Tags

New post 27 Jan 2012, 02:20
4
7
00:00
A
B
C
D
E

Difficulty:

  85% (hard)

Question Stats:

60% (01:22) correct 40% (01:33) wrong based on 281 sessions

HideShow timer Statistics

Some of the people in Town X are left-handed, some are tall, some are both, and some are neither. In Town Y, three times as many people are left-handed as are left-handed in Town X, three times as many people are tall as are tall in Town X, three times as many people are both as are both in Town X, but no one is neither. If the total number of people in Town X is four times greater than the total number of people in Town Y, which of the following could be the number of people in Town X who are neither left-handed nor tall?

A. 23
B. 39
C. 72
D. 143
E. 199

_________________

Giving +1 kudos is a better way of saying 'Thank You'.

Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 52161
Re: Some of the people in Town X are left-handed, some are tall  [#permalink]

Show Tags

New post 27 Jan 2012, 02:37
7
1
boomtangboy wrote:
Some of the people in Town X are left-handed, some are tall, some are both, and some are neither. In Town Y, three times as many people are left-handed as are left-handed in Town X, three times as many people are tall as are tall in Town X, three times as many people are both as are both in Town X, but no one is neither. If the total number of people in Town X is four times greater than the total number of people in Town Y, which of the following could be the number of people in Town X who are neither left-handed nor tall?

A. 23
B. 39
C. 72
D. 143
E. 199


{Total in X}={left-handed in X}+{tall in X}-{both in X}+{neither in X};
{Total in Y}=3*{left-handed in X}+3*{tall in X}-3*{both in X}+0;

As the total number of people in Town X is four times as many as in the total number of people in Town Y (I think it's the intended meaning), then:

{left-handed in X}+{tall in X}-{both in X}+{neither in X}=4(3*{left-handed in X}+3*{tall in X}-3*{both in X}) --> {neither in X}=11({left-handed in X}+{tall in X}-{both in X}) --> hence {neither in X} (the number of people in Town X who are neither left-handed nor tall) must be a multiple of 11. The only answer which is multiple of 11 is 143=13*11.

Answer: D.

Hope it's clear.
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | 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

Intern
Intern
avatar
Joined: 18 Jun 2012
Posts: 32
Re: Some of the people in Town X are left-handed, some are tall  [#permalink]

Show Tags

New post 17 Jul 2012, 14:02
2
The question says "total number of people in Town X is four times greater than the total number of people in Town Y" . doesn't that means 5 times ?
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 52161
Re: Some of the people in Town X are left-handed, some are tall  [#permalink]

Show Tags

New post 18 Jul 2012, 01:33
smartmanav wrote:
The question says "total number of people in Town X is four times greater than the total number of people in Town Y" . doesn't that means 5 times ?


You are right, the question should read "the total number of people in Town X is four times as many as the total number of people in Town Y".
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | 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

Manager
Manager
avatar
Joined: 25 Jun 2012
Posts: 62
Location: India
WE: General Management (Energy and Utilities)
Re: Some of the people in Town X are left-handed, some are tall  [#permalink]

Show Tags

New post 19 Jul 2012, 03:33
Is there any way to solve this question by Venn diagram method??
I tried but couldnt comeup with any...
Current Student
User avatar
B
Joined: 28 Mar 2012
Posts: 311
Location: India
GMAT 1: 640 Q50 V26
GMAT 2: 660 Q50 V28
GMAT 3: 730 Q50 V38
GMAT ToolKit User
Re: Some of the people in Town X are left-handed, some are tall  [#permalink]

Show Tags

New post 19 Jul 2012, 05:47
1
Hi,

I love drawing venn diagrams, but in this question it won't help much other than providing a visual information about the question.
In the following diagram:
For town X,
a = Number of left handed people
b = Number of tall people
c = Number of both tall & left handed.
d = Neither

For town Y,
3a = Number of left handed people
3b = Number of tall people
3c = Number of both tall & left handed.
Attachment:
venn..jpg
venn..jpg [ 18.86 KiB | Viewed 7753 times ]


Now, (a+b-c)+x = 4(3a+3b-3c)
or x = 11(a+b-c)
thus, we should look for the multiple of 11 in the answer. ( (a+b-c) would be a positive quantity.)

Answer (D)

Regards,
Manager
Manager
User avatar
Joined: 23 Aug 2011
Posts: 67
Re: Some of the people in Town X are left-handed, some are tall  [#permalink]

Show Tags

New post 13 Aug 2012, 03:05
little problems with the wording of the question, but managed to solve it.However, i took more than 3 minutes for this problem, any shortcuts? I used the table method but drawing the table and logging the values in the table itself took 2 minutes :(
_________________

Whatever one does in life is a repetition of what one has done several times in one's life!
If my post was worth it, then i deserve kudos :)

Senior Manager
Senior Manager
avatar
B
Joined: 24 Aug 2009
Posts: 469
Schools: Harvard, Columbia, Stern, Booth, LSB,
Re: Some of the people in Town X are left-handed, some are tall  [#permalink]

Show Tags

New post 22 Aug 2012, 08:15
Good Question - Simple question but lengthy. Kudos given
_________________

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

Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 52161
Re: Some of the people in Town X are left-handed, some are tall  [#permalink]

Show Tags

New post 16 Jul 2013, 23:33
Retired Moderator
avatar
B
Status: On a mountain of skulls, in the castle of pain, I sit on a throne of blood.
Joined: 30 Jul 2013
Posts: 323
GMAT ToolKit User Reviews Badge
Some of the people in Town X are left-handed, some are tall, some are  [#permalink]

Show Tags

New post 01 Sep 2014, 09:37
Some of the people in Town X are left-handed, some are tall, some are both, and some are neither. In Town
Y, three times as many people are left-handed as are left-handed in Town X, three times as many people are
tall as are tall in Town X, three times as many people are both as are both in Town X, but no one is neither. If
the total number of people in Town X is four times greater than the total number of people in Town Y, which
of the following could be the number of people in Town X who are neither left-handed nor tall?
A. 23
B. 39
C. 72
D. 143
E. 199
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 52161
Re: Some of the people in Town X are left-handed, some are tall  [#permalink]

Show Tags

New post 01 Sep 2014, 09:48
AmoyV wrote:
Some of the people in Town X are left-handed, some are tall, some are both, and some are neither. In Town
Y, three times as many people are left-handed as are left-handed in Town X, three times as many people are
tall as are tall in Town X, three times as many people are both as are both in Town X, but no one is neither. If
the total number of people in Town X is four times greater than the total number of people in Town Y, which
of the following could be the number of people in Town X who are neither left-handed nor tall?
A. 23
B. 39
C. 72
D. 143
E. 199


Merging topics. Please refer to the discussion above.

Can you please try searching before posting? Thank you.
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | 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

Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 9415
Premium Member
Re: Some of the people in Town X are left-handed, some are tall  [#permalink]

Show Tags

New post 29 Dec 2018, 00:35
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 Bot
Re: Some of the people in Town X are left-handed, some are tall &nbs [#permalink] 29 Dec 2018, 00:35
Display posts from previous: Sort by

Some of the people in Town X are left-handed, some are tall

  post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

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

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.