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Of the 60 animals on a certain farm, 2/3 are either pigs or

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Of the 60 animals on a certain farm, 2/3 are either pigs or [#permalink] New post 24 May 2009, 08:05
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Of the 60 animals on a certain farm, 2/3 are either pigs or cows, how many of the animals are cows?
1). The farm has more than twice as many cows as it has pigs.
2). The farm has more than 12 pigs.
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Re: cows & pigs [#permalink] New post 24 May 2009, 09:20
IMO C
40: pigs or cows


Of the 60 animals on a certain farm, 2/3 are either pigs or cows, how many of the animals are cows?
1). The farm has more than twice as many cows as it has pigs -->at most, there are 13 pigs, but not sufficient alone
2). The farm has more than 12 pigs --> not alone sufficient

Combine: --> 13 pigs & 27 cows
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Re: cows & pigs [#permalink] New post 28 May 2009, 11:04
IMO C too...
Whats the OA?
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Re: cows & pigs [#permalink] New post 01 Jun 2009, 09:01
1). The farm has more than twice as many cows as it has pigs -->at most, there are 13 pigs, but not sufficient alone

how is it inferred that pigs are at most 13.

is it c= 2p

c or p =40
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Re: cows & pigs [#permalink] New post 01 Jun 2009, 09:11
Quote:
1). The farm has more than twice as many cows as it has pigs -->at most, there are 13 pigs, but not sufficient alone

how is it inferred that pigs are at most 13.

is it c= 2p

c or p =40


Of the 60 animals on a certain farm, 2/3 are either pigs or cows -
c+p =2/3 * 60 =40

1). The farm has more than twice as many cows as it has pigs.
2). The farm has more than 12 pigs

If we combine stat 1 and stat 2, then
p>12
c>2p
Lets consider p=14, then c would be greater than 28(2x14=28)
14+29=43 -not correct because c+p =40
only if p=13 then c can be(greater than 13x2=26) 27
therefore C is the answer.

Hope my post is helpful.
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Re: cows & pigs [#permalink] New post 01 Jun 2009, 10:44
IMO C
I hope OA is also C
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Re: cows & pigs [#permalink] New post 01 Jun 2009, 10:49
amolsk11 wrote:
IMO C
I hope OA is also C


OA is C

I got the same question on GMATPrep
Re: cows & pigs   [#permalink] 01 Jun 2009, 10:49
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