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

It is currently 02 Sep 2014, 09:10

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 certail pool of 12000 liters has two vaults; A to fill the

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
SVP
SVP
User avatar
Joined: 03 Feb 2003
Posts: 1613
Followers: 5

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

A certail pool of 12000 liters has two vaults; A to fill the [#permalink] New post 07 Aug 2003, 01:31
A certail pool of 12000 liters has two vaults; A to fill the pool and B to pour out. The rate of the filling vault is 500 liters per hour; that of B is 100 lph. The vaults start to work simultaneously. When the pool is half full, the vault A stops to work for 5 hours and 12 minutes and then resumes its working. The vault B works without interruptions. How lond will it take to fill the pool completely?
SVP
SVP
User avatar
Joined: 03 Feb 2003
Posts: 1613
Followers: 5

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

 [#permalink] New post 07 Aug 2003, 04:28
too little time to fill so large pool
GMAT Instructor
User avatar
Joined: 07 Jul 2003
Posts: 771
Location: New York NY 10024
Schools: Haas, MFE; Anderson, MBA; USC, MSEE
Followers: 9

Kudos [?]: 27 [0], given: 0

GMAT Tests User
Re: POOL 2 [#permalink] New post 07 Aug 2003, 08:23
stolyar wrote:
A certail pool of 12000 liters has two vaults; A to fill the pool and B to pour out. The rate of the filling vault is 500 liters per hour; that of B is 100 lph. The vaults start to work simultaneously. When the pool is half full, the vault A stops to work for 5 hours and 12 minutes and then resumes its working. The vault B works without interruptions. How lond will it take to fill the pool completely?


First of all, it doesn't make any difference when A shuts down. so long as there are at least 520 liters in the pool, so you don't have to figure out exactly when the pool is half full. The only thing that is important is that B is draining the pool by itself for 5.2 hours. Hence B dumps 520 liters that the two working together have to make up. So the problem is simply the combined rate of 400 working for some time to fill 12520 liters + 5.2 hours. The answer is 31.3 hours + the 5.2 hours = 36.5 hours.
_________________

Best,

AkamaiBrah
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993

SVP
SVP
User avatar
Joined: 03 Feb 2003
Posts: 1613
Followers: 5

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

 [#permalink] New post 07 Aug 2003, 09:35
I prefer a step-by-step approach:

(1) the pool is half full: 6000=400T; T=15 hours
(2) 5.2 hours, only pouring pipe works, taking away 520 liters, leaving 6000-520=5480 in the pool
(3) together again 12000-5480=400T; T=16.3 hours

Finally, 15+5.2+16.3=36.5 hours
Manager
Manager
User avatar
Joined: 24 Jun 2003
Posts: 147
Location: India
Followers: 1

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

GMAT Tests User
 [#permalink] New post 07 Aug 2003, 23:36
stolyar wrote:
I prefer a step-by-step approach:

(1) the pool is half full: 6000=400T; T=15 hours
(2) 5.2 hours, only pouring pipe works, taking away 520 liters, leaving 6000-520=5480 in the pool
(3) together again 12000-5480=400T; T=16.3 hours

Finally, 15+5.2+16.3=36.5 hours


Stolyar, excellent question and excellent answer !
  [#permalink] 07 Aug 2003, 23:36
    Similar topics Author Replies Last post
Similar
Topics:
8 Experts publish their posts in the topic Marge has 3 pumps for filling her swimming pool. When all 3 Rock750 5 10 Feb 2013, 06:11
8 Experts publish their posts in the topic An empty swimming pool with a capacity of 75,000 liters is enigma123 10 01 Apr 2012, 15:06
Experts publish their posts in the topic An empty swimming pool with a capacity of 100,000 liters is bipolarbear 6 14 Aug 2009, 20:08
3 A pool has two inlet pipes. The first inlet can fill the sonibubu 6 27 Feb 2008, 18:10
With both valves open, the pool will be filled with water in bmwhype2 1 21 Nov 2007, 05:09
Display posts from previous: Sort by

A certail pool of 12000 liters has two vaults; A to fill the

  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®.