It is currently 17 Oct 2017, 04:44

### 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

# When 200 gallons of oil were removed from a tank, the volume of oil

Author Message
TAGS:

### Hide Tags

Manager
Joined: 02 Sep 2008
Posts: 103

Kudos [?]: 104 [1], given: 1

When 200 gallons of oil were removed from a tank, the volume of oil [#permalink]

### Show Tags

25 Mar 2009, 23:05
1
KUDOS
1
This post was
BOOKMARKED
00:00

Difficulty:

15% (low)

Question Stats:

76% (01:02) correct 24% (01:19) wrong based on 353 sessions

### HideShow timer Statistics

When 200 gallons of oil were removed from a tank, the volume of oil left in the tank was $$\frac{3}{7}$$ of the tank's capacity. What was the tank’s capacity?

(1) Before the 200 gallons were removed, the volume of oil in the tank was $$\frac{1}{2}$$ of the tank's capacity.
(2) After the 200 gallons were removed, the volume of the oil left in the tank was 1,600 gallons less than the tank's capacity.

Official Guide 12 Question

 Question: 27 Page: 275 Difficulty: 600

Find All Official Guide Questions

Video Explanations:
[Reveal] Spoiler: OA

Kudos [?]: 104 [1], given: 1

Manager
Joined: 09 Nov 2008
Posts: 148

Kudos [?]: 13 [0], given: 3

Re: When 200 gallons of oil were removed from a tank, the volume of oil [#permalink]

### Show Tags

26 Mar 2009, 02:55
D
(1) 1/2*x-3/7*x=200 , can solve for x
(2) x-1600=3/7*x

Kudos [?]: 13 [0], given: 3

Senior Manager
Joined: 16 Jan 2009
Posts: 355

Kudos [?]: 232 [0], given: 16

Concentration: Technology, Marketing
GMAT 1: 700 Q50 V34
GPA: 3
WE: Sales (Telecommunications)
Re: When 200 gallons of oil were removed from a tank, the volume of oil [#permalink]

### Show Tags

26 Mar 2009, 03:31
1
This post was
BOOKMARKED
A : 1/2*x-3/7*x=200 SUFFICIENT
B : x-1600=3/7*x SUFFICIENT
_________________

Lahoosaher

Kudos [?]: 232 [0], given: 16

Manager
Status: Next engagement on Nov-19-2011
Joined: 12 Jan 2011
Posts: 79

Kudos [?]: 28 [0], given: 5

Location: New Delhi, India
Schools: IIM, ISB, & XLRI
WE 1: B.Tech (Information Technology)
Re: When 200 gallons of oil were removed from a tank, the volume of oil [#permalink]

### Show Tags

19 Oct 2011, 04:27
:D:

Let current quantity in tank = X and Tank's total capacity = T
Now, X - 200 = 3T/7

So, if we know X we could solve for T.

1. Suff.
2. Tricky but Suff. Since T - 1600 = 3T/7
_________________

Preparation for final battel:
GMAT PREP-1 750 Q50 V41 - Oct 16 2011
GMAT PREP-2 710 Q50 V36 - Oct 22 2011 ==> Scored 50 in Quant second time in a row
MGMAT---- -1 560 Q28 V39 - Oct 29 2011 ==> Left Quant half done and continued with Verbal. Happy to see Q39

My ongoing plan: http://gmatclub.com/forum/550-to-630-need-more-to-achieve-my-dream-121613.html#p989311

Appreciate by kudos !!

Kudos [?]: 28 [0], given: 5

GMAT Club Legend
Joined: 09 Sep 2013
Posts: 16766

Kudos [?]: 273 [0], given: 0

Re: When 200 gallons of oil were removed from a tank, the volume of oil [#permalink]

### Show Tags

22 Jul 2015, 02:06
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

Kudos [?]: 273 [0], given: 0

Manager
Status: IF YOU CAN DREAM IT, YOU CAN DO IT
Joined: 03 Jul 2017
Posts: 115

Kudos [?]: 7 [0], given: 8

Location: India
Re: When 200 gallons of oil were removed from a tank, the volume of oil [#permalink]

### Show Tags

04 Jul 2017, 04:29
Let the total volume of the tank be X. Therefore X-200 = 3/7(x). I derived this information from the question stem. Where am i going wrong in my approach??

Kudos [?]: 7 [0], given: 8

Math Expert
Joined: 02 Sep 2009
Posts: 41871

Kudos [?]: 128525 [0], given: 12180

Re: When 200 gallons of oil were removed from a tank, the volume of oil [#permalink]

### Show Tags

04 Jul 2017, 21:49
longhaul123 wrote:
Let the total volume of the tank be X. Therefore X-200 = 3/7(x). I derived this information from the question stem. Where am i going wrong in my approach??

This is not correct because we don't know whether the tank initially was full to capacity. So, it should be x - 200 = 3/7*t, where x is the initial volume of the liquid and t is the total capacity of the tank.
_________________

Kudos [?]: 128525 [0], given: 12180

Director
Joined: 19 Mar 2014
Posts: 929

Kudos [?]: 218 [0], given: 186

Location: India
Concentration: Finance, Entrepreneurship
GPA: 3.5
Re: When 200 gallons of oil were removed from a tank, the volume of oil [#permalink]

### Show Tags

05 Jul 2017, 23:20
milind1979 wrote:
When 200 gallons of oil were removed from a tank, the volume of oil left in the tank was $$\frac{3}{7}$$ of the tank's capacity. What was the tank’s capacity?

(1) Before the 200 gallons were removed, the volume of oil in the tank was $$\frac{1}{2}$$ of the tank's capacity.
(2) After the 200 gallons were removed, the volume of the oil left in the tank was 1,600 gallons less than the tank's capacity.

Official Guide 12 Question

 Question: 27 Page: 275 Difficulty: 600

Find All Official Guide Questions

Video Explanations:

When 200 Gallons was removed - 3/7 was left of tank's capacity.

With this in order to calculate the tanks capacity, we need to know what does 200 gallons corresponds to or what is the remaining 3/7 capacity corresponds to.

(1) Before the 200 gallons were removed, the volume of oil in the tank was $$\frac{1}{2}$$ of the tank's capacity.

Provides information on what 200 gallons corresponds to overall tank volume, hence sufficient.

(2) After the 200 gallons were removed, the volume of the oil left in the tank was 1,600 gallons less than the tank's capacity.

Provides information on what the 3/7th volume corresponds to, hence sufficient.

_________________

"Nothing in this world can take the place of persistence. Talent will not: nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not: the world is full of educated derelicts. Persistence and determination alone are omnipotent."

Worried About IDIOMS? Here is a Daily Practice List: https://gmatclub.com/forum/idiom-s-ydmuley-s-daily-practice-list-250731.html#p1937393

Best AWA Template: https://gmatclub.com/forum/how-to-get-6-0-awa-my-guide-64327.html#p470475

Kudos [?]: 218 [0], given: 186

Manager
Joined: 04 May 2014
Posts: 119

Kudos [?]: 8 [0], given: 60

Location: India
WE: Sales (Mutual Funds and Brokerage)
Re: When 200 gallons of oil were removed from a tank, the volume of oil [#permalink]

### Show Tags

24 Jul 2017, 04:35
Each of the Statement is sufficient.
Attachments

Screen Shot 2017-07-24 at 5.00.41 PM.jpg [ 22.64 KiB | Viewed 666 times ]

Kudos [?]: 8 [0], given: 60

Re: When 200 gallons of oil were removed from a tank, the volume of oil   [#permalink] 24 Jul 2017, 04:35
Display posts from previous: Sort by