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

It is currently 22 Sep 2014, 16:31

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

Last september the sales total for a certain car dealership

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Intern
Intern
avatar
Joined: 05 Apr 2008
Posts: 24
Followers: 0

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

GMAT Tests User
Last september the sales total for a certain car dealership [#permalink] New post 31 Aug 2008, 17:45
Last september the sales total for a certain car dealership was 400% greater than the average (arithmetic mean) monthly sales total for the other 11 months of the year. The sales total for September was approximately what percent of the year's sales?

a) 15%
b) 27%
c) 31%
d) 42%
e) 75%
Current Student
User avatar
Joined: 11 May 2008
Posts: 559
Followers: 7

Kudos [?]: 22 [0], given: 0

GMAT Tests User
Re: Math Question [#permalink] New post 31 Aug 2008, 19:26
such problems are best done , by plugging

let every month sale or average sale per month (for 11 months) be 1 car / month.
so sale in september = 400% of monthly avg ... sorry 400% greater ( notice the difference) this is where we make mistakes.
= (400/100)+1 = 5 times avg monthly sale
so sep sale/ total yr sale= 5/16 = (3 and something) %. from the ans , only C matches.
CEO
CEO
User avatar
Joined: 29 Aug 2007
Posts: 2501
Followers: 53

Kudos [?]: 507 [0], given: 19

GMAT Tests User
Re: Math Question [#permalink] New post 31 Aug 2008, 19:29
HVD1975 wrote:
Last september the sales total for a certain car dealership was 400% greater than the average (arithmetic mean) monthly sales total for the other 11 months of the year. The sales total for September was approximately what percent of the year's sales?

a) 15%
b) 27%
c) 31%
d) 42%
e) 75%


11 moth avg = x
11 month total = 11x
sept = 400% of x + x = 5x
sept/totoal = =5x/(11x+5x) = =31%
_________________

Verbal: new-to-the-verbal-forum-please-read-this-first-77546.html
Math: new-to-the-math-forum-please-read-this-first-77764.html
Gmat: everything-you-need-to-prepare-for-the-gmat-revised-77983.html


GT

SVP
SVP
User avatar
Joined: 07 Nov 2007
Posts: 1829
Location: New York
Followers: 27

Kudos [?]: 456 [0], given: 5

GMAT Tests User
Re: Math Question [#permalink] New post 31 Aug 2008, 21:17
HVD1975 wrote:
Last september the sales total for a certain car dealership was 400% greater than the average (arithmetic mean) monthly sales total for the other 11 months of the year. The sales total for September was approximately what percent of the year's sales?

a) 15%
b) 27%
c) 31%
d) 42%
e) 75%


5x/11x+5x = 5/16 = 31%
_________________

Your attitude determines your altitude
Smiling wins more friends than frowning

Re: Math Question   [#permalink] 31 Aug 2008, 21:17
    Similar topics Author Replies Last post
Similar
Topics:
Experts publish their posts in the topic A certain car dealership sells economy cars, luxury cars Gnpth 4 03 Jul 2014, 06:49
6 Experts publish their posts in the topic In a network of car dealerships, a group of d sales director skamal7 10 22 Apr 2013, 20:57
At the beginning of the last year, a car dealership had 150 achan 8 30 Apr 2010, 09:44
If every car sold last week at a certain used-car dealership vivek123 4 31 Dec 2005, 04:22
A certain car dealership has two locations. Last month, an tbetten 7 22 Jun 2005, 16:15
Display posts from previous: Sort by

Last september the sales total for a certain car dealership

  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®.