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

It is currently 16 Sep 2014, 13:54

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

In a certain population, there are 3 times as many people ag

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
User avatar
Joined: 19 Nov 2009
Posts: 329
Followers: 4

Kudos [?]: 60 [0], given: 44

GMAT Tests User
In a certain population, there are 3 times as many people ag [#permalink] New post 05 May 2010, 12:56
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

81% (01:29) correct 19% (00:27) wrong based on 67 sessions
In a certain population, there are 3 times as many people aged twenty-one or under as there are people over twenty-one. The ratio of those twenty-one or under to the total population is

(A) 1 to 2
(B) 1 to 3
(C) 1 to 4
(D) 2 to 3
(E) 3 to 4
[Reveal] Spoiler: OA

Last edited by Bunuel on 26 Feb 2014, 00:16, edited 2 times in total.
Renamed the topic, edited the question and added the OA.
1 KUDOS received
Manager
Manager
avatar
Joined: 02 Aug 2009
Posts: 111
Followers: 2

Kudos [?]: 11 [1] , given: 1

Re: population ratio - ETS Paper Test [#permalink] New post 05 May 2010, 13:25
1
This post received
KUDOS
just plug in #s

say there are 6 people aged under 21. Thus there will be 2 people over 21 so a total of 8 people. And we are asked what proportion under 21 (6) is to total (8)

6/8=3/4 =E

Additionally same exact approach 3X/3X+1X = 3/4
Manager
Manager
avatar
Joined: 23 Sep 2009
Posts: 154
Followers: 1

Kudos [?]: 15 [0], given: 37

Re: population ratio - ETS Paper Test [#permalink] New post 05 May 2010, 21:28
Consider the ratio of the under population of 21 to over the 21 as 3:1
therefore 3x:1X
Now the ratio of the under to the whole population becomes 3x/3x+1x
= 3/4

Answer is E)
_________________

Thanks,
VP

Senior Manager
Senior Manager
User avatar
Joined: 19 Nov 2009
Posts: 329
Followers: 4

Kudos [?]: 60 [0], given: 44

GMAT Tests User
Re: population ratio - ETS Paper Test [#permalink] New post 06 May 2010, 10:20
thanks for the explanation !

This was a simple one... but i messed it up and got the answer as "1 to 4" :(
Senior Manager
Senior Manager
User avatar
Affiliations: SPG
Joined: 15 Nov 2006
Posts: 326
Followers: 11

Kudos [?]: 266 [0], given: 20

GMAT Tests User
Re: population ratio - ETS Paper Test [#permalink] New post 19 May 2010, 19:43
is there a section for avoiding stupid mistakes ...i wrote down 1:1 ....completely forgot that it was thrice ..:(
1 KUDOS received
Manager
Manager
avatar
Joined: 21 Aug 2013
Posts: 113
Schools: ISB '15
Followers: 2

Kudos [?]: 9 [1] , given: 54

Re: population ratio - ETS Paper Test [#permalink] New post 25 Feb 2014, 21:07
1
This post received
KUDOS
Hi,
Please add the OA.
_________________

Veritas Prep - 650
MGMAT 1 590
MGMAT 2 640 (V48/Q31)

Please help the community by giving Kudos.

Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 29654
Followers: 3489

Kudos [?]: 26221 [0], given: 2707

Re: population ratio - ETS Paper Test [#permalink] New post 26 Feb 2014, 00:18
Expert's post
Re: population ratio - ETS Paper Test   [#permalink] 26 Feb 2014, 00:18
    Similar topics Author Replies Last post
Similar
Topics:
2 Experts publish their posts in the topic Exactly 3/7 of the people in the room are under the age of clciotola 3 21 May 2013, 00:53
4 Experts publish their posts in the topic Many people are alarmed about the population explosion jamifahad 23 31 Aug 2011, 06:14
1 There are three times as many people aged 21 or under as redbeanaddict 2 18 Jun 2008, 03:20
In a certain animal population, for each of the first 3 qhoc0010 5 21 Jan 2005, 07:36
In a certain animal population, for each of the first 3 dshishkov 2 06 Nov 2004, 13:24
Display posts from previous: Sort by

In a certain population, there are 3 times as many people ag

  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®.