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

 It is currently 06 May 2015, 16:35

### 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

Author Message
TAGS:
Intern
Joined: 15 Apr 2006
Posts: 5
Location: Long Island
Followers: 0

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

In a refinery, the capacity of oil tank A is 70 percent of [#permalink]  15 Apr 2006, 07:26
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
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
Senior Manager
Joined: 08 Sep 2004
Posts: 258
Location: New York City, USA
Followers: 1

Kudos [?]: 9 [0], given: 0

C.

2) gives you the capacity of both the tanks

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

- Vipin
Intern
Joined: 15 Apr 2006
Posts: 5
Location: Long Island
Followers: 0

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

Can you give me an example of the equations that would be setup for both?
Senior Manager
Joined: 08 Sep 2004
Posts: 258
Location: New York City, USA
Followers: 1

Kudos [?]: 9 [0], given: 0

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...
VP
Joined: 28 Mar 2006
Posts: 1384
Followers: 2

Kudos [?]: 19 [0], given: 0

Re: DS - Capacity [#permalink]  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
Re: DS - Capacity   [#permalink] 15 Apr 2006, 09:28
Similar topics Replies Last post
Similar
Topics:
18 An empty fuel tank with a capacity of 200 gallons was fill 11 27 May 2012, 03:59
Cylinder Tank Capacity - GMATClub Test m25 q#37 7 10 Aug 2011, 22:47
42 Pipe A fills a tank of capacity 700 liters at the rate of 40 13 29 Apr 2010, 10:40
In a refinery, the capacity of oil tank A is 70 percent of 2 16 Mar 2008, 10:25
Pipe A fills a tank of 700 litres capacity at the rate of 40 3 29 Oct 2005, 09:23
Display posts from previous: Sort by