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

It is currently 22 Jul 2014, 16:10

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

If tank x contains only gasoline, how many kiloliters of gas

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Intern
Intern
avatar
Joined: 25 Dec 2012
Posts: 28
Followers: 0

Kudos [?]: 3 [0], given: 10

If tank x contains only gasoline, how many kiloliters of gas [#permalink] New post 06 Feb 2013, 20:51
1
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  25% (low)

Question Stats:

74% (02:13) correct 26% (01:06) wrong based on 39 sessions
If tank x contains only gasoline, how many kiloliters of gasoline are in tank x?

(1) if 1/2 of the gas in tank x were pumped out, the tank would be filled to 1/3 of its capacity
(2) if .75 kiloliter of gas were pumped into tank x, it would be filled to capacity

[Reveal] Spoiler:
I narrowed it down to C or E.

The correct answer is C.. but I just dont understand how to figure out mathematically why its C.

Appreciate the help!
[Reveal] Spoiler: OA
1 KUDOS received
Moderator
Moderator
User avatar
Joined: 02 Jul 2012
Posts: 1226
Location: India
Concentration: Strategy
GMAT 1: 740 Q49 V42
GPA: 3.8
WE: Engineering (Energy and Utilities)
Followers: 61

Kudos [?]: 623 [1] , given: 116

GMAT Tests User Premium Member
Re: If Tank X.. [#permalink] New post 06 Feb 2013, 21:40
1
This post received
KUDOS
exploringm wrote:
If tank x contains only gasoline, how many kiloliters of gasoline are in tank x?

(1) if 1/2 of the gas in tank x were pumped out, the tank would be filled to 1/3 of its capacity
(2) if .75 kiloliter of gas were pumped into tank x, it would be filled to capacity

I narrowed it down to C or E.

The correct answer is C.. but I just dont understand how to figure out mathematically why its C.

Appreciate the help!


1) It can be concluded from this statement that the tank is currently filled to \frac{2}{3}^{rd} of its capacity. But we do not know what the capacity of the tank is. Insufficient.

2) We do not know what the capacity of the tank is or to what extent the tank is already filled. Insufficient.

1 & 2 together.,

The tank is filled to \frac{2}{3}^{rd} of its capacity. So filling \frac{1}{3}^{rd} of its capacity would fill the tank. So, 0.75 kiloliters is \frac{1}{3}^{rd} of its capacity. So, the capacity of the tank is simply 0.75*3. Sufficient.

Answer is C

_________________

Did you find this post helpful?... Please let me know through the Kudos button.

Thanks To The Almighty - My GMAT Debrief

GMAT Reading Comprehension: 7 Most Common Passage Types

Director
Director
avatar
Joined: 24 Aug 2009
Posts: 510
Schools: Harvard, Columbia, Stern, Booth, LSB,
Followers: 8

Kudos [?]: 354 [0], given: 241

Re: If Tank X.. [#permalink] New post 06 Feb 2013, 21:43
exploringm wrote:
If tank x contains only gasoline, how many kiloliters of gasoline are in tank x?
(1) if 1/2 of the gas in tank x were pumped out, the tank would be filled to 1/3 of its capacity
(2) if .75 kiloliter of gas were pumped into tank x, it would be filled to capacity

Appreciate the help!


Lets say The total capacity of the tank = T
Current amount of gasoline in the tank = C
Question asks the value of C

Statement 1- if 1/2 of the gas in tank x were pumped out, the tank would be filled to 1/3 of its capacity
C - (1/2)C = (1/3)T
(1/2)C= (1/3)T
C= (2/3)T
Value of T is unknown. Thus insufficient

Statement 2- if .75 kiloliter of gas were pumped into tank x, it would be filled to capacity
C + 0.75 = T
C= T - 0.75
Value of T is unknown. Thus insufficient

Statement 1 & 2-
C= (2/3)T -----(Statement 1)
C= T - 0.75 -----(Statement 2)
(2/3)T = T - 0.75
(1/3) T = 0.75
T = 3 * 0.75 = 2.25
Value of T is 2.25 and thus we can calculate the value of C as well. Thus Sufficient
So the answer is C

Hope this detailed explanation helps.

Fame

_________________

If you like my Question/Explanation or the contribution, Kindly appreciate by pressing KUDOS.
Kudos always maximizes GMATCLUB worth
-Game Theory

If you have any question regarding my post, kindly pm me or else I won't be able to reply

Re: If Tank X..   [#permalink] 06 Feb 2013, 21:43
    Similar topics Author Replies Last post
Similar
Topics:
A tank contains GMATD11 3 13 Feb 2011, 02:03
If tank contains only gasoline, how many kiloliters of el1981 7 24 Sep 2007, 07:23
If tank X contains only gasoline, how many kiloliters of andrecrompton 3 08 Apr 2006, 14:07
How many kiloliters of water are in a reservoir? 1. If the GMATT73 7 27 Oct 2005, 07:51
Display posts from previous: Sort by

If tank x contains only gasoline, how many kiloliters of gas

  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®.