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On average, the local zoo moves the location of the animals

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On average, the local zoo moves the location of the animals [#permalink] New post 30 Nov 2008, 10:28
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E

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On average, the local zoo moves the location of the animals within its park twice a year. It is not uncommon for zoos to move animals within the park, and often when the ratio of months in the year to months in a location for a given animal falls below 2 to 1 this is a sign that the zoo will soon add new animals to its collection. In the past year the local zoo has moved some animals as much as three times more than it normally would.

The above statements best support which prediction?


(A) The zoo will add new animals soon.
(B) Soon the animals will become restless and unhappy.
(C) The number of animals at the zoo will decrease.
(D) More people will come to the zoo.
(E) The imbalance between total months and months in a location will increase.
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Re: CR: Prediction [#permalink] New post 30 Nov 2008, 10:50
i think E..

say the old ratio is 2/1 - 2/3 however if the moves increase as the passages suggests 2/1 -2/x where x>3 means the

2/1-2/x > 2-2/3
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Re: CR: Prediction [#permalink] New post 30 Nov 2008, 13:46
Tough one!

I arrived at E via POE. Took a while. Initially I looked for answer that says the Zoo will NOT add any more animals. As I did not find it and A is a remote possibility, I felt E is a better choice.

B & D are clearly out of scope

C is trap. Argument never tells us when the number will decrease.

Between A & E, A will only happen on occasion.

In the past year the local zoo has moved some animals as much as three times more than it normally would.


Does this mean the zoo moved animals 5 times? That's what I understood.

If it moved 5 times, 2 months in each location 4 times and 4 months in one location, the ratios will be 12:2/6:1 and 12:4/3:1 which are both > 2:1 Hence Zoo will not add more animals. But if the zoo moved 5 times 1 month each 4 times and 8 months in one location, then it becomes 12:1 and 12:8, which is 3:2 and falls below 2:1 More like a E in DS. Dang!

Ended up with E
Re: CR: Prediction   [#permalink] 30 Nov 2008, 13:46
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On average, the local zoo moves the location of the animals

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