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In a class, 20 students speak spanish, 15 speak french and [#permalink]
17 Dec 2006, 14:22

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A

B

C

D

E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct
0% (00:00) wrong based on 0 sessions

In a class, 20 students speak spanish, 15 speak french and 15 speak chinese. how many students are in the class?
1. exactly 30% of the students in the class speak french
2. all of the students speak english and none speaks more than two languages.

1) straightforwardm, just work out the number of students from this 15/.3 = 50
2) There is no overlap among french, chinese and spanish speakers so total 15 + 15 + 20 = 50

Re: DS number of students in class [#permalink]
17 Dec 2006, 17:25

n_sathya wrote:

In a class, 20 students speak spanish, 15 speak french and 15 speak chinese. how many students are in the class? 1. exactly 30% of the students in the class speak french 2. all of the students speak english and none speaks more than two languages.

any takers?

I think its A.
From B None speak more than 2 languages, does not mean that there are no students who speak 1 language. ie there can be x students who speak only english. therefore B is not suff.

Re: DS number of students in class [#permalink]
17 Dec 2006, 17:50

n_sathya wrote:

In a class, 20 students speak spanish, 15 speak french and 15 speak chinese. how many students are in the class? 1. exactly 30% of the students in the class speak french 2. all of the students speak english and none speaks more than two languages.

any takers?

I would go for A as well.

1. exactly 30% speak french => 30%T = F => T can be found.
2. all of the students speak english and none speaks more than two languages.

So some students may speak "Only" English, French etc. Since its not given how many speak just one of these languages, the total number cannot be found. so this is not sufficient

1) straightforwardm, just work out the number of students from this 15/.3 = 50 2) There is no overlap among french, chinese and spanish speakers so total 15 + 15 + 20 = 50

AgreeD

1. All students speak english.
2. No student speaks more than two languages.

That means the guys speaking French speak French & English. The same holds true for chinese and spanish speakers as well. Note that there cannot be any overlap between french & chinese, chinese & spanish, etc due to 2.

In a class, 20 students speak spanish, 15 speak french and 15 speak chinese. how many students are in the class?
1. exactly 30% of the students in the class speak french
2. all of the students speak english and none speaks more than two languages.
-------------------------------------------------------------------

A..

1) 30% is 15 -> 100% is 50 suffi.
2) here, there can be some x students who speak greek or latin or 'timepass' language(s) and (of course english too as given)..no where it is mentioned from stem and 2) that students speak only sp or fr or ch & eng.
as we dont know this x , so, 2) is insuffi..

In a class, 20 students speak spanish, 15 speak french and 15 speak chinese. how many students are in the class? 1. exactly 30% of the students in the class speak french 2. all of the students speak english and none speaks more than two languages.

I say D.

If everyone speaks English and no one speaks more than 2 languages then we simply add 20, 15 and 15 to find the # of students in the class, 20 students speak spanish and english, 15 speak french and english and 15 speak chinese and english

In a class, 20 students speak spanish, 15 speak french and 15 speak chinese. how many students are in the class? 1. exactly 30% of the students in the class speak french 2. all of the students speak english and none speaks more than two languages.

I say D.

If everyone speaks English and no one speaks more than 2 languages then we simply add 20, 15 and 15 to find the # of students in the class, 20 students speak spanish and english, 15 speak french and english and 15 speak chinese and english

Re: DS number of students in class [#permalink]
18 Dec 2006, 19:18

n_sathya wrote:

In a class, 20 students speak spanish, 15 speak french and 15 speak chinese. how many students are in the class? 1. exactly 30% of the students in the class speak french 2. all of the students speak english and none speaks more than two languages.

any takers?

A for me please

1) Gives the total =150
2)We do know exactly how many only speak English(who are not bilingual)

In a class, 20 students speak spanish, 15 speak french and 15 speak chinese. how many students are in the class? 1. exactly 30% of the students in the class speak french 2. all of the students speak english and none speaks more than two languages. Stmt 1) Sufficient, we can calculate no of students in the class.

Stmt 2) we dont know the number of english speakers.