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Each of the offices in a certain building has a floor area

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Each of the offices in a certain building has a floor area [#permalink] New post 18 Sep 2006, 16:31
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Each of the offices in a certain building has a floor area of 200, 300, or 350 square feet. How many offices are on the first floor of the building?"

(1) There is a total of 9,500 square feet of office space on the first floor of the building

(2) Ten of the offices on the first floor have floor areas of 350 square feet each.
[Reveal] Spoiler: OA

Last edited by Bunuel on 02 Jul 2013, 07:48, edited 1 time in total.
Edited the question and added the OA
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Re: GMAT Prep - DS [#permalink] New post 18 Sep 2006, 16:49
wshaffer wrote:
Answer to the following is E. Could someone please explain? Thanks.

Each of the offices in a certain building has a floor area of 200, 300, or 350 square feet. How many offices are on the first floor of the building?

(1) There is a total of 9500 square feet of office space on the first floor of the building.

(2) Ten of the offices on the first floor have areas of 350 square feet each.


1) gives us total area, but there are many different ways to add 200, 300 or 350. 2) gives us 10 offices, but we don't know the total area.

If we consider both then we know that 9500 - 10*350= 6000, once again you can have 30 offices with 200 square feet each or 20 offices with 300 square feet each or combination of 200, 300 and 350.
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 [#permalink] New post 19 Sep 2006, 01:04
Pretty straightforward.

1) Tells us nothing about the possible breakup of offices. Could be a number of combinations. INSUFFICIENT.
2) Tells us nothing about total office space or total square footage of other office types. INSUFFICIENT.

Taken together we know 10 @ 350 = 3500, so we have 6000 sq feet remaining, but still could be any combo of 200 and 300 sq foot offices.
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Re: Each of the offices in a certain building has a floor area [#permalink] New post 02 Jul 2013, 05:07
Is this question as simple as it seems to be or am I missing something?
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Re: Each of the offices in a certain building has a floor area [#permalink] New post 02 Jul 2013, 07:57
Expert's post
fozzzy wrote:
Is this question as simple as it seems to be or am I missing something?


It's pretty simple, yes.

Each of the offices in a certain building has a floor area of 200, 300, or 350 square feet. How many offices are on the first floor of the building?

(1) There is a total of 9,500 square feet of office space on the first floor of the building. There are many ways to break 9,500 into the sum of 200's, 300's and 350's. Not sufficient.

(2) Ten of the offices on the first floor have floor areas of 350 square feet each. This just tells that there are more than 10 offices on the first floor. Not sufficient.

(1)+(2) 9,500 - 350*10 = 6,000 square feet on the first floor is occupied by 200 or 300 square feet offices. The same here: there are many ways to break 6,000 into the sum of 200's and 300's. Not sufficient.

Answer: E.
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Re: Each of the offices in a certain building has a floor area [#permalink] New post 03 Dec 2013, 06:38
wshaffer wrote:
Each of the offices in a certain building has a floor area of 200, 300, or 350 square feet. How many offices are on the first floor of the building?"

(1) There is a total of 9,500 square feet of office space on the first floor of the building

(2) Ten of the offices on the first floor have floor areas of 350 square feet each.


Let's take Statement 2 for instance, when they say stuff like 'Ten of the offices on the first floor have 350 sq feet'
We can assume that they are only describing those 10 and that by no means they are saying that the ONLY ones that have 350 are those ten right?

Cheers
J :)
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Re: Each of the offices in a certain building has a floor area [#permalink] New post 05 Dec 2013, 07:23
Expert's post
jlgdr wrote:
wshaffer wrote:
Each of the offices in a certain building has a floor area of 200, 300, or 350 square feet. How many offices are on the first floor of the building?"

(1) There is a total of 9,500 square feet of office space on the first floor of the building

(2) Ten of the offices on the first floor have floor areas of 350 square feet each.


Let's take Statement 2 for instance, when they say stuff like 'Ten of the offices on the first floor have 350 sq feet'
We can assume that they are only describing those 10 and that by no means they are saying that the ONLY ones that have 350 are those ten right?

Cheers
J :)


Yes, the second statement means that there are exactly ten offices with floor areas of 350 square feet.
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PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

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Re: Each of the offices in a certain building has a floor area   [#permalink] 05 Dec 2013, 07:23
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