PS - flow : GMAT Verbal Section
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 19 Jan 2017, 22:39

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# PS - flow

Author Message
Manager
Joined: 23 Jan 2008
Posts: 108
Followers: 2

Kudos [?]: 74 [1] , given: 0

### Show Tags

31 Jan 2008, 18:14
1
KUDOS
At a constant rate of flow, it takes 20 minutes to fill a swimming pool if a large hose is used and 30 minutes if a small hose is used. At the constant rates, how many minutes will it take to fill the pool when both hoses are used simultaneously?

1. 10
2. 12
3.15
4.25
5. 50
If you have any questions
New!
Manager
Joined: 21 Dec 2007
Posts: 99
Followers: 1

Kudos [?]: 14 [0], given: 0

### Show Tags

01 Feb 2008, 07:27
1/30+1/20=1/x
(2+3)/60=1/x
5/60=1/x
x=12

SVP
Joined: 28 Dec 2005
Posts: 1575
Followers: 3

Kudos [?]: 147 [0], given: 2

### Show Tags

01 Feb 2008, 11:35
wrong section, but my answer is 12 as well
Re: PS - flow   [#permalink] 01 Feb 2008, 11:35
Similar topics Replies Last post
Similar
Topics:
19 PS: Exponents (m06q07) 20 13 Nov 2008, 10:25
PS geometery 5 21 Sep 2008, 17:28
PS: STAMPS 2 25 Mar 2008, 18:24
PS..mod.. 3 15 Aug 2007, 08:50
PS : Difficult Questions set 0 13 Jul 2007, 12:31
Display posts from previous: Sort by