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# GMATPREPDS:UN

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Senior Manager
Joined: 20 Feb 2008
Posts: 296
Location: Bangalore, India
Schools: R1:Cornell, Yale, NYU. R2: Haas, MIT, Ross
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17 May 2008, 20:18
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Senior Manager
Joined: 20 Feb 2008
Posts: 296
Location: Bangalore, India
Schools: R1:Cornell, Yale, NYU. R2: Haas, MIT, Ross
Followers: 4

Kudos [?]: 45 [0], given: 0

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18 May 2008, 06:52
GMAT TIGER wrote:
ventivish wrote:

E on this one.

Yep thats the official answer, but could you please provide an explanation? I seem to be making false assumptions with these type of questions and am constantly second guessing the GMAT given the time constraints.
How would you solve this if you had about 1min 45 second.

I would really appreciate any advice!!
Intern
Joined: 09 Dec 2007
Posts: 29
Location: China
WE: Investment Banking (Investment Banking)
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18 May 2008, 07:17
ventivish wrote:

My take:

1. so, 56% of expenditure was paid by the top four countries. and each paid more than X. well, we could assume that 1) is the 5th or 6th or 2)we could assume that its out of the big 6 => more than one reasoning for this => not suff.

2. country x paid 4.8 percent. again, this alone tells us nothing => not suff.

Combining 1 AND 2. well, it basically is saying that 56% is paid by the top 4, we know that the top six pays 67.1%. which means 11.1% is shared between 5th or 6th. now, we could present that x is in the top 6 with 4.8 and the 5th paying 6.3% or we could assume that 11.1% is shared between 5th or 6th. Either way, there's more than one solution surfacing, hence ans = E?

Okey, this is my really simple basic math reasoning, would someone please stand up and explain this q in mathanese please?
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18 May 2008, 07:56
ventivish wrote:
GMAT TIGER wrote:
ventivish wrote:

E on this one.

Yep thats the official answer, but could you please provide an explanation? I seem to be making false assumptions with these type of questions and am constantly second guessing the GMAT given the time constraints.
How would you solve this if you had about 1min 45 second.

I would really appreciate any advice!!

6 highest countries = 67.8%
remaining = 32.2%

from 1: 4 highest countries = 56%
remaining 2 highest countries = 11.8%
country x's contribution could be anything so that it could or could not be among those 6 countries. nsf

from 2: x's contribution = 4.8%

4.8% could be included in 67.8% or 32.2%. if the lowest contributing country among the 6 highest contributing countries contributed less than 4.8%, then x is in among 6 countries, otherwise not. nsf..

togather also it is still not clear on the % of contribution by the lowest contributing country among the 6 highest paying countries.

so E.
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Senior Manager
Joined: 20 Feb 2008
Posts: 296
Location: Bangalore, India
Schools: R1:Cornell, Yale, NYU. R2: Haas, MIT, Ross
Followers: 4

Kudos [?]: 45 [0], given: 0

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18 May 2008, 13:52
Re: GMATPREPDS:UN   [#permalink] 18 May 2008, 13:52
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