Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

It is currently 27 May 2017, 23:17

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.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

At a contest with 1,500 participants, 1/2 of the people are aged 8 to

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

Hide Tags

Manager
Manager
User avatar
Joined: 28 Jan 2011
Posts: 76
Location: Tennessee
Schools: Belmont University
Followers: 2

Kudos [?]: 171 [0], given: 73

At a contest with 1,500 participants, 1/2 of the people are aged 8 to [#permalink]

Show Tags

New post 07 Apr 2011, 14:20
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

75% (01:41) correct 25% (00:28) wrong based on 8 sessions

HideShow timer Statistics

At a contest with 1,500 participants, 1/2 of the people are aged 8 to 12. Next year, the number of people aged 8 to 12 will increase by 1/3. After this change, what percentage of the total 1,500 people will the 8- to 12-year-olds represent?

A. 33%
B. 40%
C. 50%
D. 55%
E. 66 2/3%
[Reveal] Spoiler: OA
Manager
Manager
User avatar
Joined: 28 Jan 2011
Posts: 76
Location: Tennessee
Schools: Belmont University
Followers: 2

Kudos [?]: 171 [0], given: 73

Re: At a contest with 1,500 participants, 1/2 of the people are aged 8 to [#permalink]

Show Tags

New post 07 Apr 2011, 14:24
Shalom Moderators
Pardon me for posting this question in the wrong forum. I will remember to post in the correct forum the next time.
Math Forum Moderator
avatar
Joined: 20 Dec 2010
Posts: 2013
Followers: 163

Kudos [?]: 1828 [0], given: 376

Re: At a contest with 1,500 participants, 1/2 of the people are aged 8 to [#permalink]

Show Tags

New post 07 Apr 2011, 14:56
MitDavidDv wrote:
At a contest with 1,500 participants, 1/2 of the people are aged 8 to 12. Next year, the number of people aged 8 to 12 will increase by 1/3. After this change, what percentage of the total 1,500 people will the 8- to 12-year-olds represent?

A. 33%
B. 40%
C. 50%
D. 55%
E. 66 2/3%


Currently half the participants are between 8 and 12

1/2*1500 = 750 participants

Next year this number will increase by 1/3

The number of participants between 8 and 12 years will be = 750+(1/3)*750 = (4/3)*750

(4/3)*750 is what percentage of 1500

\(\frac{4}{3}*750*\frac{1}{1500}*100\)

\(\frac{4}{3}*\frac{1}{2}*100 = \frac{200}{3} = 66\frac{2}{3}\)

Ans: "E"
_________________

~fluke

GMAT Club Premium Membership - big benefits and savings

SVP
SVP
avatar
Joined: 16 Nov 2010
Posts: 1666
Location: United States (IN)
Concentration: Strategy, Technology
Followers: 34

Kudos [?]: 533 [0], given: 36

Premium Member Reviews Badge
Re: At a contest with 1,500 participants, 1/2 of the people are aged 8 to [#permalink]

Show Tags

New post 07 Apr 2011, 21:21
750 -> Aged 8 - 12

Next year -> 750 + 750/3 = 750 + 250 = 1000

So %age = 1000/1500 = 10/15 = 662/3 %

Answer - E
_________________

Formula of Life -> Achievement/Potential = k * Happiness (where k is a constant)

GMAT Club Premium Membership - big benefits and savings

Expert Post
1 KUDOS received
GMAT Tutor
avatar
Joined: 24 Jun 2008
Posts: 1180
Followers: 438

Kudos [?]: 1606 [1] , given: 4

Re: At a contest with 1,500 participants, 1/2 of the people are aged 8 to [#permalink]

Show Tags

New post 08 Apr 2011, 06:51
1
This post received
KUDOS
Expert's post
MitDavidDv wrote:
At a contest with 1,500 participants, 1/2 of the people are aged 8 to 12. Next year, the number of people aged 8 to 12 will increase by 1/3. After this change, what percentage of the total 1,500 people will the 8- to 12-year-olds represent?

A. 33%
B. 40%
C. 50%
D. 55%
E. 66 2/3%


I just wanted to mention a couple of things here:

* this is a pure ratio question; the number 1,500 is completely irrelevant, and you can ignore it if you like. When we increase something by 1/3, we are multiplying it by 1 + 1/3 = 4/3, so the answer here must be (1/2)*(4/3) = 2/3 = 66 2/3 %.

* you can certainly take advantage of the answer choices to get the answer without any computation. The fraction of 8-12 year olds has clearly increased, so D and E are the only candidates. D would be the answer if the increase were 10%; it's more than 10% so the answer must be E.
_________________

GMAT Tutor in Toronto

If you are looking for online GMAT math tutoring, or if you are interested in buying my advanced Quant books and problem sets, please contact me at ianstewartgmat at gmail.com

Manager
Manager
User avatar
Joined: 28 Jan 2011
Posts: 76
Location: Tennessee
Schools: Belmont University
Followers: 2

Kudos [?]: 171 [0], given: 73

Re: At a contest with 1,500 participants, 1/2 of the people are aged 8 to [#permalink]

Show Tags

New post 16 Apr 2011, 12:56
Shalom!
I am currently working on my GMAT preparation @ Belmont University.
Re: At a contest with 1,500 participants, 1/2 of the people are aged 8 to   [#permalink] 16 Apr 2011, 12:56
    Similar topics Author Replies Last post
Similar
Topics:
3 The ages of three people are such that the age of one person is twice rohan2345 4 20 May 2017, 02:19
4 In a shooting contest, each participant only shoots one times nguyendinhtuong 2 12 Dec 2016, 09:00
Experts publish their posts in the topic At a summer camp with 1,500 participants, 1/2 of the campers are aged Bunuel 3 19 May 2017, 06:29
1 A group of people participate in some curriculum, 20 of them veenu08 1 15 Dec 2013, 22:24
Experts publish their posts in the topic A group of people participate in some curriculums, 20 of IrinaOK 16 04 Jan 2011, 14:15
Display posts from previous: Sort by

At a contest with 1,500 participants, 1/2 of the people are aged 8 to

  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®.