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

It is currently 20 Oct 2014, 23:13

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

A Town T has 40,000 residents, 25 percent of whom are age 60

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
2 KUDOS received
Director
Director
avatar
Status: Preparing for the 4th time -:(
Joined: 25 Jun 2011
Posts: 562
Location: United Kingdom
Concentration: International Business, Strategy
GMAT Date: 06-22-2012
GPA: 2.9
WE: Information Technology (Consulting)
Followers: 13

Kudos [?]: 518 [2] , given: 217

A Town T has 40,000 residents, 25 percent of whom are age 60 [#permalink] New post 26 Feb 2012, 16:43
2
This post received
KUDOS
2
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

75% (02:33) correct 25% (01:57) wrong based on 194 sessions
A Town T has 40,000 residents, 25 percent of whom are age 60 or older. What percent of the residents are female?

(1) The number of female residents of Town T age 60 or older is 30 percent of the number of female residents who are not 60 or older.

(2) 37 percent of the residents of Town T are males who are not 60 or older.


I really struggle to solve these questions. Now for this I am trying to solve by using attached table but struggling. can you please help?
[Reveal] Spoiler: OA

Attachments

Table.GIF
Table.GIF [ 4.81 KiB | Viewed 2501 times ]


_________________

Best Regards,
E.

MGMAT 1 --> 530
MGMAT 2--> 640
MGMAT 3 ---> 610 :-(

Expert Post
2 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 23348
Followers: 3602

Kudos [?]: 28679 [2] , given: 2808

Re: A Town T has 40,000 residents, 25 percent of whom are age 60 [#permalink] New post 26 Feb 2012, 17:29
2
This post received
KUDOS
Expert's post
A Town T has 40,000 residents, 25 percent of whom are age 60 or older. What percent of the residents are female?

You can solve this problem with just reasoning but since you chose double-set matrix I'll proceed with it to show how it can be done. Given:
Attachment:
Stem.PNG
Stem.PNG [ 3.86 KiB | Viewed 2507 times ]
Numbers in black are given, numbers in red are calculated. We need to find the value of yellow box.

(1) The number of female residents of Town T age 60 or older is 30 percent of the number of female residents who are not 60 or older.
Attachment:
Statement 1.PNG
Statement 1.PNG [ 4.05 KiB | Viewed 2507 times ]
Not sufficient.

(2) 37 percent of the residents of Town T are males who are not 60 or older.
Attachment:
Statement 2.PNG
Statement 2.PNG [ 4.46 KiB | Viewed 2505 times ]
Not sufficient.

(1)+(2)
Attachment:
1+2.PNG
1+2.PNG [ 4.85 KiB | Viewed 2505 times ]
We know x=15200, hence we can get 1.3x. Sufficient.

Answer: C.

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

Expert Post
Moderator
Moderator
User avatar
Joined: 01 Sep 2010
Posts: 2440
Followers: 310

Kudos [?]: 2604 [0], given: 695

Re: A Town T has 40,000 residents, 25 percent of whom are age 60 [#permalink] New post 28 Feb 2012, 16:31
Expert's post
Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 23348
Followers: 3602

Kudos [?]: 28679 [0], given: 2808

Re: A Town T has 40,000 residents, 25 percent of whom are age 60 [#permalink] New post 11 Jun 2013, 06:27
Expert's post
Bumping for review and further discussion*. Get a kudos point for an alternative solution!

*New project from GMAT Club!!! Check HERE

Theory on Overlapping Sets:
advanced-overlapping-sets-problems-144260.html
how-to-draw-a-venn-diagram-for-problems-98036.html

All DS Overlapping Sets Problems to practice: search.php?search_id=tag&tag_id=45
All PS Overlapping Sets Problems to practice: search.php?search_id=tag&tag_id=65

_________________

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: A Town T has 40,000 residents, 25 percent of whom are age 60   [#permalink] 11 Jun 2013, 06:27
    Similar topics Author Replies Last post
Similar
Topics:
Experts publish their posts in the topic Town T has 35,000 residents, 40% of whom earn at least $50,0 m3equals333 3 28 Mar 2014, 18:38
1 Experts publish their posts in the topic A Town T has 20,000 residents, 60 percent of whom are fem al Bunuel 5 29 Jan 2014, 01:16
1 QR DS 63: A Town T has 20,000 residents, 60 percent of whom Baten80 9 21 Feb 2011, 06:06
In a town of 17,000 residents, 65 percent of all residents alimad 2 17 Nov 2007, 06:41
1 A town T has 20,000 residents, 60 percent of whom are heman 8 31 Aug 2006, 20:42
Display posts from previous: Sort by

A Town T has 40,000 residents, 25 percent of whom are age 60

  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®.