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Of 100 dogs at an animal shelter, some are doxin and the

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Of 100 dogs at an animal shelter, some are doxin and the [#permalink] New post 10 Nov 2010, 03:47
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31% (02:04) correct 69% (00:40) wrong based on 26 sessions
Of 100 dogs at an animal shelter, some are doxin and the rest are poodles. If all the dogs at the shelter are adopted, how many of the doxin were adopted?

(1) Two-thirds as many poodles as doxin were adopted.

(2) The difference between the number of poodles adopted and the number of doxin adopted is 20.
[Reveal] Spoiler: OA

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Re: Doggies [#permalink] New post 10 Nov 2010, 05:38
Opt A)
Given:
poodles - x
dioxins -2/3(x)

2/3(x)+x = 100
5/3(x) = 100
5x = 300
x = 60

Opt - A)
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Re: Doggies [#permalink] New post 10 Nov 2010, 09:21
we have d + p = 100

from S2 we get p - d = 20 ( not d-p =20 )

from this we can get d why is S2 not sufficient by itself
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Re: Doggies [#permalink] New post 10 Nov 2010, 09:33
Think the OA is wrong. Statement 2 is also sufficient.

Correct answer should be D
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Re: Doggies [#permalink] New post 10 Nov 2010, 14:47
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Statement II states that the DIFFERENCE between the poodles and the doxin is 20...

In this case, shouldnt there be 2 possibilities?
Case 1: 60 poodles 40 doxin
Case 2: 40 poodles 60 doxin

difference either way is 20....Im taking this question to mean absolute difference..

Statement II insufficient...Is that right??

Casey--then again,Im a newbie just 2 weeks in to studying...what do I know
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Re: Doggies [#permalink] New post 10 Nov 2010, 18:23
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baker2145 wrote:
Statement II states that the DIFFERENCE between the poodles and the doxin is 20...

In this case, shouldnt there be 2 possibilities?
Case 1: 60 poodles 40 doxin
Case 2: 40 poodles 60 doxin

difference either way is 20....Im taking this question to mean absolute difference..

Statement II insufficient...Is that right??

Casey--then again,Im a newbie just 2 weeks in to studying...what do I know


Newbie or not, you are absolutely right baker2145. Difference means it could be d - p or p - d, hence you cannot find the exact number.
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Re: Doggies [#permalink] New post 10 Nov 2010, 19:20
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Got tricked. :wall
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Re: Doggies [#permalink] New post 11 Nov 2010, 06:57
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I love such twisters A
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Re: Doggies [#permalink] New post 13 Nov 2010, 11:51
baker2145 wrote:
Statement II states that the DIFFERENCE between the poodles and the doxin is 20...

In this case, shouldnt there be 2 possibilities?
Case 1: 60 poodles 40 doxin
Case 2: 40 poodles 60 doxin

difference either way is 20....Im taking this question to mean absolute difference..

Statement II insufficient...Is that right??

Casey--then again,Im a newbie just 2 weeks in to studying...what do I know


ah i got tricked into (D) but good explanation, +1 for you
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Re: Doggies [#permalink] New post 13 Nov 2010, 12:00
I like that one!Good question
Re: Doggies   [#permalink] 13 Nov 2010, 12:00
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Of 100 dogs at an animal shelter, some are doxin and the

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