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Each first-year student at a certain school selects either

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Director
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Each first-year student at a certain school selects either [#permalink]

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New post 29 Mar 2012, 15:59
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Each first-year student at a certain school selects either the traditional curriculum or the modern curriculum. Of the first-year students at the school, 65 percent selected the modern curriculum and the rest selected the traditional curriculum. What percent of the first-year students are female?

(1) Twice as many female …first-year students selected the modern curriculum than selected the traditional curriculum.
(2) Of the first-year students who selected the traditional curriculum, 55 percent are female.
[Reveal] Spoiler: OA

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Re: Number of Female students [#permalink]

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New post 29 Mar 2012, 16:52
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Each fi…rst-year student at a certain school selects either the traditional curriculum or the modern curriculum. Of the fi…rst-year students at the school, 65 percent selected the modern curriculum and the rest selected the traditional curriculum. What percent of the fi…rst-year students are female?

(1) Twice as many female fir…st-year students selected the modern curriculum than selected the traditional curriculum:
Attachment:
1.png
1.png [ 5.79 KiB | Viewed 3632 times ]
Not sufficient.

(2) Of the fi…rst-year students who selected the traditional curriculum, 55 percent are female:
Attachment:
2.png
2.png [ 6.16 KiB | Viewed 3626 times ]
Not sufficient.

(1)+(2) As you can see x from (1) equals to 19.25 from (2), so 3x (percent of the female students) equals to 3*19.2557.75%. Sufficient.

Answer: C.

Hope it's clear.
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Re: Each first-year student at a certain school selects either [#permalink]

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New post 11 Jun 2013, 07:28
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Bumping for review and further discussion*. Get a kudos point for an alternative solution!

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Re: Each first-year student at a certain school selects either [#permalink]

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New post 18 Aug 2013, 07:50
Bunuel, I approcahed the problem in the same way and got C as the answer , Although Have question.
How can the number of Female students be 19.25? It has to be a whole number isnt it? People can't be fractions.
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Re: Each first-year student at a certain school selects either [#permalink]

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New post 18 Aug 2013, 08:00
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jayaddula wrote:
Bunuel, I approcahed the problem in the same way and got C as the answer , Although Have question.
How can the number of Female students be 19.25? It has to be a whole number isnt it? People can't be fractions.



enigma123 wrote:
Each first-year student at a certain school selects either the traditional curriculum or the modern curriculum. Of the first-year students at the school, 65 percent selected the modern curriculum and the rest selected the traditional curriculum. What percent of the first-year students are female?

(1) Twice as many female …first-year students selected the modern curriculum than selected the traditional curriculum.
(2) Of the first-year students who selected the traditional curriculum, 55 percent are female.



The question is asking for percent. so it can be a fraction.
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Re: Each first-year student at a certain school selects either [#permalink]

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New post 30 Jan 2014, 09:08
Just a small point for discussion,
when they say Traditional or Modern it means T +M- Both.

So T+M-Both =100
now when they say T= 65 and the rest is Modern, how are we assuming that M= 35 and Both = 0 ?

It could be T= 65, M= 45 and Both = 10 ( or any other combination that leads to a 100% )
or T= 65, M= 35, Both = 0 ( as done in the problem)

if there are no students taking both , then Both = 0 then of course the problem is easy to understand, but why and how are we assuming that B= 0, when it says T or M, which means T+M-both .

Nowhere does it state that the student cannot take both,is this common knowledge?

Thanks.
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Re: Each first-year student at a certain school selects either [#permalink]

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New post 01 Feb 2014, 06:07
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stne wrote:
Just a small point for discussion,
when they say Traditional or Modern it means T +M- Both.

So T+M-Both =100
now when they say T= 65 and the rest is Modern, how are we assuming that M= 35 and Both = 0 ?

It could be T= 65, M= 45 and Both = 10 ( or any other combination that leads to a 100% )
or T= 65, M= 35, Both = 0 ( as done in the problem)

if there are no students taking both , then Both = 0 then of course the problem is easy to understand, but why and how are we assuming that B= 0, when it says T or M, which means T+M-both .

Nowhere does it state that the student cannot take both,is this common knowledge?

Thanks.


Yes, from "each fi…rst-year student at a certain school selects either the traditional curriculum or the modern curriculum" we can safely assume that neither of the students selects both.
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New to the Math Forum?
Please read this: All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


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Re: Each first-year student at a certain school selects either   [#permalink] 01 Feb 2014, 06:07
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