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Author Message
Manager
Joined: 13 Mar 2008
Posts: 71

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31 Aug 2008, 01:13
Ditrama is a federation made up of three autonomous

regions: Korva, Mitro, and Guadar. Under the federal

revenue-sharing plan, each region receives a share of

federal revenues equal to the share of the total

population of Ditrama residing in that region, as

shown by a yearly population survey. Last year, the

percentage of federal revenues Korva received for its

share decreased somewhat even though the

population survey on which the revenue-sharing was

based showed that Korva's population had increased.

If the statements above are true, which one of the

following must also have been shown by the

population survey on which last year's

revenue-sharing in Ditrama was based?

(A) Of the three regions, Korva had the smallest

number of residents.

(B) The population of Korva grew by a smaller

percentage than it did in previous years.

(C) The populations of Mitro and Guadar each

increased by a percentage that exceeded the

percentage by which the population of

Korva increased.

(D) Of the three regions, Korva's numerical

increase in population was the smallest.

(E) Korva's population grew by a smaller

percentage than did the population of at

least one of the other two autonomous

regions.

Please explain with proper reasons...if possible also give a general rule to tackle such kind of question...i am very weak in dealing with such questions...

thanks!

bepositive

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Senior Manager
Joined: 06 Apr 2008
Posts: 390

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31 Aug 2008, 01:56
Ditrama is a federation made up of three autonomous regions: Korva, Mitro, and Guadar. Under the federal revenue-sharing plan, each region receives a share of federal revenues equal to the share of the total population of Ditrama residing in that region, as shown by a yearly population survey. Last year, the percentage of federal revenues Korva received for its share decreased somewhat even though the population survey on which the revenue-sharing was based showed that Korva's population had increased. If the statements above are true, which one of the following must also have been shown by the
population survey on which last year's revenue-sharing in Ditrama was based?

(A) Of the three regions, Korva had the smallest number of residents.

(B) The population of Korva grew by a smaller percentage than it did in previous years.

(C) The populations of Mitro and Guadar each increased by a percentage that exceeded the percentage by which the population of Korva increased.

(D) Of the three regions, Korva's numerical increase in population was the smallest.

(E) Korva's population grew by a smaller percentage than did the population of at least one of the other two autonomous
regions.

Manager
Joined: 21 Aug 2008
Posts: 186

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31 Aug 2008, 03:31
nmohindru wrote:
Ditrama is a federation made up of three autonomous regions: Korva, Mitro, and Guadar. Under the federal revenue-sharing plan, each region receives a share of federal revenues equal to the share of the total population of Ditrama residing in that region, as shown by a yearly population survey. Last year, the percentage of federal revenues Korva received for its share decreased somewhat even though the population survey on which the revenue-sharing was based showed that Korva's population had increased.

If the statements above are true, which one of the following must also have been shown by the population survey on which last year's revenue-sharing in Ditrama was based?

(A) Of the three regions, Korva had the smallest number of residents.

(B) The population of Korva grew by a smaller percentage than it did in previous years.

(C) The populations of Mitro and Guadar each increased by a percentage that exceeded the percentage by which the population of Korva increased.

(D) Of the three regions, Korva's numerical increase in population was the smallest.

(E) Korva's population grew by a smaller percentage than did the population of at least one of the other two autonomous
regions.

[Fact]
Ditrima = Korva + Mitro + Guadar
Revenue sharing is based on the portion of population.
Korva portion decreased while its population increased.

Manager
Joined: 25 May 2008
Posts: 183

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31 Aug 2008, 05:36
IMO C. In D we have a numerical growth, but the author speaks about share, so I think C is the right answer.
Manager
Joined: 09 Jul 2007
Posts: 233

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31 Aug 2008, 07:52
IMO E.

Ditrima = Korva + Mitro + Guadar

Now when Korva's share has decreased .. ( Mitro+Guadar )'s share has increased. that does not require each of Mitro and Gaudar's share to increase as long as the combined share increase is more than that of Korva's
Intern
Joined: 03 Mar 2008
Posts: 44

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31 Aug 2008, 09:51
ssandeepan wrote:
IMO E.

Ditrima = Korva + Mitro + Guadar

Now when Korva's share has decreased .. ( Mitro+Guadar )'s share has increased. that does not require each of Mitro and Gaudar's share to increase as long as the combined share increase is more than that of Korva's

i beg to differ to your logic.
Thre requirement is ( Mitro+Guadar )'s share has to increase. If only one increases and no information is provided for other, you cannot make that conclusion. Mitro + Guadar could remain the same, however Mitro could have increased by 10 fold and Guadar might have reduced accrodingly.

If both Mitro and Guadar increased, then Mitro+guadar would definitely increase. IMO C
Senior Manager
Joined: 06 Apr 2008
Posts: 390

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01 Sep 2008, 08:29
kandyhot27 wrote:
ssandeepan wrote:
IMO E.

Ditrima = Korva + Mitro + Guadar

Now when Korva's share has decreased .. ( Mitro+Guadar )'s share has increased. that does not require each of Mitro and Gaudar's share to increase as long as the combined share increase is more than that of Korva's

i beg to differ to your logic.
Thre requirement is ( Mitro+Guadar )'s share has to increase. If only one increases and no information is provided for other, you cannot make that conclusion. Mitro + Guadar could remain the same, however Mitro could have increased by 10 fold and Guadar might have reduced accrodingly.

If both Mitro and Guadar increased, then Mitro+guadar would definitely increase. IMO C

The argument says "Last year, the percentage of federal revenues Korva received for its share decreased somewhat" which means the share can decrease even compared to one other state.

E) says "at least one of" which goes with above statement so IMO E)
Intern
Joined: 17 Aug 2008
Posts: 19

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01 Sep 2008, 09:31
I agree with E as well. E does not come as too strong and answers like these are usually correct on the GMAT.

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