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

It is currently 01 Sep 2014, 06:00

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

Taken From MGMAT # 3 A convenience store currently stocks 48

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
User avatar
Joined: 26 Jun 2007
Posts: 107
Followers: 2

Kudos [?]: 18 [0], given: 0

Taken From MGMAT # 3 A convenience store currently stocks 48 [#permalink] New post 22 Jan 2008, 01:09
Taken From MGMAT # 3

A convenience store currently stocks 48 bottles of mineral water. The bottles have two sizes of either 20 or 40 ounces each. The average volume per bottle the store currently has in stock is 35 ounces. How many 40 ounce bottles must be sold for the average volume per bottle to be reduced to 25 ounces if no 20 ounce bottles are sold?

(A) 10
(B) 20
(C) 30
(D) 32
(E) 34

Please Explain
Manhattan GMAT Discount CodesKaplan GMAT Prep Discount CodesGMAT Pill GMAT Discount Codes
SVP
SVP
avatar
Joined: 04 May 2006
Posts: 1941
Schools: CBS, Kellogg
Followers: 16

Kudos [?]: 277 [0], given: 1

Premium Member CAT Tests
Re: Statistics from MGMAT #3 [#permalink] New post 22 Jan 2008, 01:34
GGUY wrote:
Taken From MGMAT # 3

A convenience store currently stocks 48 bottles of mineral water. The bottles have two sizes of either 20 or 40 ounces each. The average volume per bottle the store currently has in stock is 35 ounces. How many 40 ounce bottles must be sold for the average volume per bottle to be reduced to 25 ounces if no 20 ounce bottles are sold?

(A) 10
(B) 20
(C) 30
(D) 32
(E) 34

Please Explain

D

20x + 40y = 35*48

20x + 40 (y-t) = 25*(48-t)
20x + 40y -40t = 25*48 - 25t
35*48 -40t = 25*48 -25t
t =32
_________________

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Manager
Manager
User avatar
Joined: 26 Jun 2007
Posts: 107
Followers: 2

Kudos [?]: 18 [0], given: 0

Re: Statistics from MGMAT #3 [#permalink] New post 22 Jan 2008, 12:10
sondenso wrote:
GGUY wrote:
Taken From MGMAT # 3
A convenience store currently stocks 48 bottles of mineral water. The bottles have two sizes of either 20 or 40 ounces each. The average volume per bottle the store currently has in stock is 35 ounces. How many 40 ounce bottles must be sold for the average volume per bottle to be reduced to 25 ounces if no 20 ounce bottles are sold?

(A) 10
(B) 20
(C) 30
(D) 32
(E) 34

Please Explain

D

20x + 40y = 35*48

20x + 40 (y-t) = 25*(48-t)
20x + 40y -40t = 25*48 - 25t
35*48 -40t = 25*48 -25t
t =32
Nice, OA= D.

My approach was to find how many bottles of 40 need to remain in order to have 25 Av:

(1) 12*20+40*t = 25* (t+12)
(2) t=4
(3) we found 12 bt of 20 ounce and 36 of 40 ounce so 36-4=32

any more takers?
Re: Statistics from MGMAT #3   [#permalink] 22 Jan 2008, 12:10
    Similar topics Author Replies Last post
Similar
Topics:
Experts publish their posts in the topic How to improve from Q44 (MGMAT) to Q48 in 2-3 weeks? salsal 1 02 Sep 2013, 01:57
3 Experts publish their posts in the topic At a certain convenience store, the revenue from Brand A hot shekar123 6 02 Jun 2010, 21:01
A convenience store currently stocks 48 bottles of mineral Kiski 3 13 Aug 2007, 19:04
2 A convenience store currently stocks 48 bottles of mineral dred 3 27 Jun 2007, 16:26
In a convenience store in a certain year, the average tyagel 2 18 Oct 2004, 08:07
Display posts from previous: Sort by

Taken From MGMAT # 3 A convenience store currently stocks 48

  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®.