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

It is currently 30 Sep 2014, 16:21

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

Two water tanks, X and Y, were drained simultaneously. If X

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
avatar
Joined: 02 Mar 2004
Posts: 330
Location: There
Followers: 1

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

Two water tanks, X and Y, were drained simultaneously. If X [#permalink] New post 09 May 2004, 09:53
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Two water tanks, X and Y, were drained simultaneously. If X contains 30 more gallons of water than Y, and both tanks became empty at the same time, how long did it take the tanks to empty?

1. For every gallon drained from Y, 2 gallons drained from X.
2. Tank Y was drained at a constant rate of 20 gallons per hour.
SVP
SVP
User avatar
Joined: 30 Oct 2003
Posts: 1798
Location: NewJersey USA
Followers: 4

Kudos [?]: 35 [0], given: 0

 [#permalink] New post 09 May 2004, 10:51
C it is.
From stem X = Y + 30

A) We dont know rate at which Y is drained.
B) We know rate of Y but not the rate of X
Combine and you get
20 * T = Y and X = 2 * 20 * T
40T = 20T+30 so T = 1.5 hours
Manager
Manager
User avatar
Joined: 07 May 2004
Posts: 184
Location: Ukraine, Russia(part-time)
Followers: 2

Kudos [?]: 6 [0], given: 0

Re: DS-99 [#permalink] New post 10 May 2004, 23:53
hallelujah1234 wrote:
Two water tanks, X and Y, were drained simultaneously. If X contains 30 more gallons of water than Y, and both tanks became empty at the same time, how long did it take the tanks to empty?

1. For every gallon drained from Y, 2 gallons drained from X.
2. Tank Y was drained at a constant rate of 20 gallons per hour.


X = Y + 30,

Tx = Ty,

X/Vx = Y/Vy

1. Vx/Vy = 2

2. Vy = 20.

So, neither 1 nor 2 alone is sufficient, but together 1 and 2 are sufficient.
Re: DS-99   [#permalink] 10 May 2004, 23:53
    Similar topics Author Replies Last post
Similar
Topics:
14 Experts publish their posts in the topic Tanks X and Y contain 500 and 200 gallons of water respectiv ichha148 12 26 Sep 2010, 19:04
Two water tanks x and y were drained simultaneously. If x jeevanchand 5 09 Apr 2009, 08:51
Tanks X and Y contain 500 and 200 gallons of water uvs_mba 4 06 Nov 2006, 05:55
There are two pumps X and Y. To empty a water tank, X gamjatang 3 25 Nov 2005, 05:28
Two water tanks, X and Y, were drained simultaneously. If X trulyblessed 5 17 Sep 2005, 01:02
Display posts from previous: Sort by

Two water tanks, X and Y, were drained simultaneously. If X

  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®.