It is currently 12 Dec 2017, 12:06

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

In a refinery, the capacity of oil tank A is 70 percent of

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Intern
Joined: 15 Apr 2006
Posts: 5

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

Location: Long Island
In a refinery, the capacity of oil tank A is 70 percent of [#permalink]

Show Tags

15 Apr 2006, 07:26
1
This post was
BOOKMARKED
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

In a refinery, the capacity of oil tank A is 70 percent of the capacity of oil tank B. How many more gallons of oil are in tank A than in tank B?

1) Tank A is 90 percent full; tank B is 50 percent full
2) When full, tank A contains 50,000 gallons of oil

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

Senior Manager
Joined: 08 Sep 2004
Posts: 257

Kudos [?]: 25 [0], given: 0

Location: New York City, USA

Show Tags

15 Apr 2006, 07:35
C.

2) gives you the capacity of both the tanks

1) gives you the amount of oil present in the tankers.

- Vipin

Kudos [?]: 25 [0], given: 0

Intern
Joined: 15 Apr 2006
Posts: 5

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

Location: Long Island

Show Tags

15 Apr 2006, 07:37
Can you give me an example of the equations that would be setup for both?

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

Senior Manager
Joined: 08 Sep 2004
Posts: 257

Kudos [?]: 25 [0], given: 0

Location: New York City, USA

Show Tags

15 Apr 2006, 08:10
Andre_p wrote:
Can you give me an example of the equations that would be setup for both?

Well, we can always setup equations, but to solve DS problems, you don't really need to do that. All that is needed is, whether we can solve the problem.

In a refinery, the capacity of oil tank A is 70 percent of the capacity of oil tank B. How many more gallons of oil are in tank A than in tank B?

1) Tank A is 90 percent full; tank B is 50 percent full
2) When full, tank A contains 50,000 gallons of oil

In this questions, what is already given is that -

A = 0.7 B - (1) - A and B are capacities of tank A and B respectively.

The question asks for the difference in Oil in gallons in tank A and B. So what we need to know is the amount of oil in both Tank A as well as B.

So the above question can be reduced to - How much oil is there in tank A and B?

Note that tanks may not be full with the oil.

Let's look at the condition2 first since it looks easier.

2) tells us the capacity of A. So now we know the capacities of A as well as B from (1).

But this does not suffice, since the tankers may not be full.

Lets look at condition 1.

1) gives us the amount of oil in each tank as percentage of its capacity.
Condition 1, by itself doesn't tells us anything. Since we don't know the capacities of A and B.

From 2, we know the capacity of each tanker. If we combine 1 and 2, we know how much oil is there in each tanker. Voila! this is what we reduced the original question to.

Hence C.

HTH...

Kudos [?]: 25 [0], given: 0

VP
Joined: 28 Mar 2006
Posts: 1367

Kudos [?]: 38 [0], given: 0

Re: DS - Capacity [#permalink]

Show Tags

15 Apr 2006, 09:28
Andre_p wrote:
In a refinery, the capacity of oil tank A is 70 percent of the capacity of oil tank B. How many more gallons of oil are in tank A than in tank B?

1) Tank A is 90 percent full; tank B is 50 percent full
2) When full, tank A contains 50,000 gallons of oil

C it is...

Didnt read the question properly the first time

Kudos [?]: 38 [0], given: 0

Non-Human User
Joined: 09 Sep 2013
Posts: 14895

Kudos [?]: 287 [0], given: 0

Re: In a refinery, the capacity of oil tank A is 70 percent of [#permalink]

Show Tags

28 Jun 2017, 10:54
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 [?]: 287 [0], given: 0

Re: In a refinery, the capacity of oil tank A is 70 percent of   [#permalink] 28 Jun 2017, 10:54
Display posts from previous: Sort by

In a refinery, the capacity of oil tank A is 70 percent of

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne 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®.