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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]

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New post 23 Mar 2013, 12:32
1
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A
B
C
D
E

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  15% (low)

Question Stats:

77% (01:16) correct 23% (01:18) wrong based on 433 sessions

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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.
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Re: What percent of the students at Jefferson High School study  [#permalink]

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New post 24 Mar 2013, 00:27
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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]

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New post 24 Mar 2013, 02:48
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Re: What percent of the students at Jefferson High School study  [#permalink]

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New post 06 May 2014, 01:26
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]

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New post 06 May 2014, 02:01
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
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Re: What percent of the students at Jefferson High School study  [#permalink]

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New post 03 Nov 2014, 23:15
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.


Another reason, why the answer is E is, we don't know from either of the choices that what percent of students don't study any of the two languages at all.
Bunuel - Please correct me if I am wrong.
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Re: What percent of the students at Jefferson High School study  [#permalink]

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New post 04 Nov 2014, 04:55
Thoughtosphere 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.


Another reason, why the answer is E is, we don't know from either of the choices that what percent of students don't study any of the two languages at all.
Bunuel - Please correct me if I am wrong.



Yes, you are right. If we knew what percent of all students does not study any of the two languages we would be able to answer the question.
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Re: What percent of the students at Jefferson High School study  [#permalink]

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New post 28 Sep 2018, 11:10
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Re: What percent of the students at Jefferson High School study   [#permalink] 28 Sep 2018, 11:10
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