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What percent of the students at Jefferson High School study

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What percent of the students at Jefferson High School study [#permalink] New post 23 Mar 2013, 11:32
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A
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E

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Question Stats:

72% (01:58) correct 28% (00:40) wrong based on 101 sessions
What percent of the students at Jefferson High School study French but not Spanish?

(1) 30% of all students at Jefferson High School study French.
(2) 40% of all students at Jefferson High School do not study Spanish.
[Reveal] Spoiler: OA
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Re: What percent of the students at Jefferson High School study [#permalink] New post 23 Mar 2013, 23:27
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thinktank wrote:
What percent of the students at Jefferson High School study French but not Spanish?

(1) 30% of all students at Jefferson High School study French.
(2) 40% of all students at Jefferson High School do not study Spanish.


Hi,

Let us assume there are 100 students then, we have

Total= No. of students that study French (F) + No. of Students that study (S) - no. of students that study both (B) + Neither (N)

Thus we have

100= F+S-B+N
St 1 gives us F only so not sufficient

So, Option A and D ruled out

St 2 ----> F+ N = 40

Alone not sufficient, so B ruled out

Combining we get S-B = 60, We still cannot find out S and B therefore insufficent and hence ans E

Thanks
Mridul

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Re: What percent of the students at Jefferson High School study [#permalink] New post 24 Mar 2013, 01:48
Expert's post
thinktank wrote:
What percent of the students at Jefferson High School study French but not Spanish?

(1) 30% of all students at Jefferson High School study French.
(2) 40% of all students at Jefferson High School do not study Spanish.


Similar question to practice:
in-jefferson-school-300-students-study-french-or-spanish-or-87885.html

Hope it helps.

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Re: What percent of the students at Jefferson High School study [#permalink] New post 09 Apr 2014, 04:51
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Re: What percent of the students at Jefferson High School study [#permalink] New post 06 May 2014, 00:26
WoundedTiger wrote:
thinktank wrote:
What percent of the students at Jefferson High School study French but not Spanish?

(1) 30% of all students at Jefferson High School study French.
(2) 40% of all students at Jefferson High School do not study Spanish.


Hi,

Let us assume there are 100 students then, we have

Total= No. of students that study French (F) + No. of Students that study (S) - no. of students that study both (B) + Neither (N)

Thus we have

100= F+S-B+N
St 1 gives us F only so not sufficient

So, Option A and D ruled out

St 2 ----> F+ N = 40

Alone not sufficient, so B ruled out

Combining we get S-B = 60, We still cannot find out S and B therefore insufficent and hence ans E

Thanks
Mridul


During GMAT time under time constraint , if we go by the simple logical question of - no information given about the possibility of a student studying either language , wont this itself give the option 'E'
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Re: What percent of the students at Jefferson High School study [#permalink] New post 06 May 2014, 01:01
himanshujovi wrote:
WoundedTiger wrote:
thinktank wrote:
What percent of the students at Jefferson High School study French but not Spanish?

(1) 30% of all students at Jefferson High School study French.
(2) 40% of all students at Jefferson High School do not study Spanish.


Hi,

Let us assume there are 100 students then, we have

Total= No. of students that study French (F) + No. of Students that study (S) - no. of students that study both (B) + Neither (N)

Thus we have

100= F+S-B+N
St 1 gives us F only so not sufficient

So, Option A and D ruled out

St 2 ----> F+ N = 40

Alone not sufficient, so B ruled out

Combining we get S-B = 60, We still cannot find out S and B therefore insufficent and hence ans E


During GMAT time under time constraint , if we go by the simple logical question of - no information given about the possibility of a student studying either language , wont this itself give the option 'E'



Well...under time constraint and depending upon on which question no. I would mark C or E and move on

I am bit old school and hence find it easier to put information on paper and avoid silly mistakes

Posted from my mobile device Image

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Re: What percent of the students at Jefferson High School study   [#permalink] 06 May 2014, 01:01
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