Jun 16 09:00 PM PDT  10:00 PM PDT For a score of 4951 (from current actual score of 40+). AllInOne Standard & 700+ Level Questions (150 questions) Jun 18 09:00 PM EDT  10:00 PM EDT Strategies and techniques for approaching featured GMAT topics. Tuesday, June 18th at 9 pm ET Jun 18 10:00 PM PDT  11:00 PM PDT Send along your receipt from another course or book to info@empowergmat.com and EMPOWERgmat will give you 50% off the first month of access OR $50 off the 3 Month Plan Only available to new students Ends: June 18th Jun 19 10:00 PM PDT  11:00 PM PDT Join a FREE 1day workshop and learn how to ace the GMAT while keeping your fulltime job. Limited for the first 99 registrants. Jun 22 07:00 AM PDT  09:00 AM PDT Attend this webinar and master GMAT SC in 10 days by learning how meaning and logic can help you tackle 700+ level SC questions with ease. Jun 23 07:00 AM PDT  09:00 AM PDT Attend this webinar to learn a structured approach to solve 700+ Number Properties question in less than 2 minutes.
Author 
Message 
TAGS:

Hide Tags

Intern
Joined: 07 Jun 2010
Posts: 18
Location: mumbai
Schools: isb

What fraction of this year's graduating students at a
[#permalink]
Show Tags
Updated on: 09 Sep 2012, 03:54
Question Stats:
63% (01:44) correct 37% (01:41) wrong based on 554 sessions
HideShow timer Statistics
What fraction of this year's graduating students at a certain college are males? (1) Of this year's graduating students, 33 percent of the males and 20 percent of the females transfered from another college. (2) Of this year's graduating students, 25 percent transfered from another college.
Official Answer and Stats are available only to registered users. Register/ Login.
Originally posted by sunland on 22 Jul 2010, 06:32.
Last edited by Bunuel on 09 Sep 2012, 03:54, edited 1 time in total.
Renamed the topic and edited the question.




Math Expert
Joined: 02 Sep 2009
Posts: 55618

Re: Q from gmatprep
[#permalink]
Show Tags
22 Jul 2010, 06:51
What fraction of this year's graduating students at a certain college are males?(1) Of this year's graduating students, 33 percent of the males and 20 percent of the females transfered from another college. (2) Of this year's graduating students, 25 percent transfered from another college. Question: \(\frac{m}{m+f}=?\) Obviously taken separately each statement is not sufficient. (1)+(2) # of transferred students from (1) equals to \(033m+0.2f\) and from (2) it equals to \(0.25(m+f)\) > \(0.33m+0.2f=0.25m+0.25f\) > \(\frac{m}{f}=\frac{5}{8}\) > \(\frac{m}{m+f}=\frac{5}{13}\). Sufficient. Answer: C.
_________________




Intern
Joined: 03 Mar 2010
Posts: 36

Re: Q from gmatprep
[#permalink]
Show Tags
23 Jul 2010, 02:12
Without doing any maths calculation, the reasoning is as follows: We need to know the percentage of male students, in other words the relationship between number of male student (M) and female student (F). This is known when you dispose an (linear) equation of M and F, something like 5M+7F=2M+15F. Statement 1 cannot make this kind of equation, statement 2 neither. Nevertheless, sharing same intermediate variable of students transferred from another college, both of statements can make an equation. Therefore correct answer is C.
_________________
Hardworkingly, you like my post, so kudos me.



Intern
Joined: 21 Jul 2010
Posts: 34
Location: currently in Taiwan
Schools: Top Taiwanese university

Re: Q from gmatprep
[#permalink]
Show Tags
26 Jul 2010, 01:57
proportion of males= X porpotion of females= Y 33x+20y=25(x+y), x+y=1 so both together are sufficient for it.



Intern
Joined: 01 Jun 2012
Posts: 19
Location: United States
Concentration: Nonprofit
GPA: 3.83

Re: Q from gmatprep
[#permalink]
Show Tags
09 Sep 2012, 09:45
Bunuel wrote: What fraction of this year's graduating students at a certain college are males?
(1) Of this year's graduating students, 33 percent of the males and 20 percent of the females transfered from another college. (2) Of this year's graduating students, 25 percent transfered from another college.
Question: \(\frac{m}{m+f}=?\)
Obviously taken separately each statement is not sufficient.
(1)+(2) # of transferred students from (1) equals to \(033m+0.2f\) and from (2) it equals to \(0.25(m+f)\) > \(0.33m+0.2f=0.25m+0.25f\) > \(\frac{m}{f}=\frac{5}{8}\) > \(\frac{m}{m+f}=\frac{5}{13}\). Sufficient.
Answer: C. Hi Bunuel, I understand what you did here, but I still don't understand how this is the number of total males over total students. To me, it looks like this is the total of males who transferred in to the total number of students who transferred in. What am I missing?



Math Expert
Joined: 02 Sep 2009
Posts: 55618

Re: Q from gmatprep
[#permalink]
Show Tags
11 Sep 2012, 02:59
egiles wrote: Bunuel wrote: What fraction of this year's graduating students at a certain college are males?
(1) Of this year's graduating students, 33 percent of the males and 20 percent of the females transfered from another college. (2) Of this year's graduating students, 25 percent transfered from another college.
Question: \(\frac{m}{m+f}=?\)
Obviously taken separately each statement is not sufficient.
(1)+(2) # of transferred students from (1) equals to \(033m+0.2f\) and from (2) it equals to \(0.25(m+f)\) > \(0.33m+0.2f=0.25m+0.25f\) > \(\frac{m}{f}=\frac{5}{8}\) > \(\frac{m}{m+f}=\frac{5}{13}\). Sufficient.
Answer: C. Hi Bunuel, I understand what you did here, but I still don't understand how this is the number of total males over total students. To me, it looks like this is the total of males who transferred in to the total number of students who transferred in. What am I missing? \(m\) and \(f\) are the number of graduating males and females respectively, so \(\frac{m}{m+f}=\frac{5}{13}\) is the fraction of graduating males (the fraction of males transferred would be \(\frac{033m}{033m+0.25f}\)). Hope it's clear.
_________________



Manager
Joined: 18 May 2010
Posts: 66

Re: What fraction of this year's graduating students at a
[#permalink]
Show Tags
19 Oct 2012, 07:06
Sorry Bunuel for a late reply. I meant the question states only the transferring students from other colleges, what about the existing ones? Thx



Math Expert
Joined: 02 Sep 2009
Posts: 55618

Re: What fraction of this year's graduating students at a
[#permalink]
Show Tags
19 Oct 2012, 07:18
chigiwigi wrote: Sorry Bunuel for a late reply. I meant the question states only the transferring students from other colleges, what about the existing ones? Thx What about them? m is the total number of males (including those who transferred and existing ones) and f is the total number of females (including those who transferred and existing ones). Given that \(0.33m+0.2f=0.25(m+f)\), from which we can find the value of \(\frac{m}{m+f}\).
_________________



Manager
Joined: 18 May 2010
Posts: 66

Re: What fraction of this year's graduating students at a
[#permalink]
Show Tags
19 Oct 2012, 07:31
Oh yeah, sorry may be missed that bit initially. Sorry again for a stupid question. : )



Senior Manager
Joined: 10 Mar 2013
Posts: 488
Location: Germany
Concentration: Finance, Entrepreneurship
GPA: 3.88
WE: Information Technology (Consulting)

Re: What fraction of this year's graduating students at a
[#permalink]
Show Tags
21 Jan 2016, 02:20
sunland wrote: What fraction of this year's graduating students at a certain college are males?
(1) Of this year's graduating students, 33 percent of the males and 20 percent of the females transfered from another college. (2) Of this year's graduating students, 25 percent transfered from another college. This is a weighted average problem (1) We are not given the ratio between M and F. Not sufficient (2) Clearly not sufficient. (1) + (2) M(33).... 8....25...... 5..... (20)F > M/F=5/8 and M/m+f=5/13 Answer C
_________________
When you’re up, your friends know who you are. When you’re down, you know who your friends are.
Share some Kudos, if my posts help you. Thank you !
800Score ONLY QUANT CAT1 51, CAT2 50, CAT3 50 GMAT PREP 670 MGMAT CAT 630 KAPLAN CAT 660



Intern
Joined: 18 May 2016
Posts: 35

Re: What fraction of this year's graduating students at a
[#permalink]
Show Tags
18 Oct 2016, 15:20
my method: expressing male/graduation class = m/n in terms of males who transferred, mt. ft is female who transferred. 1. Nominator: m=3mt (from mt=1/3m) 2. Denominator: i. n=4*nt (nt=people who transferred=1/4n) ii. nt=1/4=xmt+(1x)ft (trying to express n in function of nt in function of mt, and to do so weighted average of mt and ft must equal 1/4) > find proportion of mt in nt iii. nt=1/xmt iv.n=4*1/xnt
divide 1. by 2.



Target Test Prep Representative
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 6521
Location: United States (CA)

Re: What fraction of this year's graduating students at a
[#permalink]
Show Tags
20 Oct 2016, 16:54
sunland wrote: What fraction of this year's graduating students at a certain college are males?
(1) Of this year's graduating students, 33 percent of the males and 20 percent of the females transfered from another college. (2) Of this year's graduating students, 25 percent transfered from another college. We need to determine what fraction of this year's graduating students at a certain college are males. Since we do not know the number of male and female graduating students in the college, we can let m = the number of male graduating students in the college and f = the number of female graduating students in the college. We need to determine the value of m/(m + f). Statement One Alone:Of this year's graduating students, 33 percent of the males and 20 percent of the females transferred from another college. Using the information from statement one, we know that 0.33m = the number of male graduating students who transferred from another college and 0.20f = the number of female graduating students who transferred from another college. However, we cannot determine the value of m/(m + f). Statement one alone is not sufficient. We can eliminate answer choices A and D. Statement Two Alone:Of this year's graduating students, 25 percent transferred from another college. Using the information from statement two we know that 0.25(m + f) = the number of graduating students who transferred from another college. However, we still cannot determine m/(m + f). Statement two alone is not sufficient. We can eliminate answer choice B. Statements One and Two Together: From statements one and two, we know that 0.33m + 0.20f must equal 0.25(m + f). That is, 0.33m + 0.20f = 0.25(m + f) 0.33m + 0.20f = 0.25m + 0.25f 0.08m = 0.05f 8m = 5f f = 8m/5 Since f = 8m/5, we can substitute 8m/5 in the expression m/(m + f) and we have: m/(m + 8m/5) 1/(1 + 8/5) 1/(13/5) = 5/13 Answer: C
_________________
5star rated online GMAT quant self study course See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews If you find one of my posts helpful, please take a moment to click on the "Kudos" button.



Manager
Joined: 22 Feb 2016
Posts: 85
Location: India
Concentration: Economics, Healthcare
GMAT 1: 690 Q42 V47 GMAT 2: 710 Q47 V39
GPA: 3.57

Re: What fraction of this year's graduating students at a
[#permalink]
Show Tags
30 Nov 2016, 20:50
Bunuel wrote: What fraction of this year's graduating students at a certain college are males?
(1) Of this year's graduating students, 33 percent of the males and 20 percent of the females transfered from another college. (2) Of this year's graduating students, 25 percent transfered from another college.
Question: \(\frac{m}{m+f}=?\)
Obviously taken separately each statement is not sufficient.
(1)+(2) # of transferred students from (1) equals to \(033m+0.2f\) and from (2) it equals to \(0.25(m+f)\) > \(0.33m+0.2f=0.25m+0.25f\) > \(\frac{m}{f}=\frac{5}{8}\) > \(\frac{m}{m+f}=\frac{5}{13}\). Sufficient.
Answer: C. Just wondering since we are supposed to find the fraction and not the exact value. The first statement says that 33% of the students are male. So if we assume the total number of student is 100 then total males if 33. Even if the number increases by any factor the empirical value will always remain 33/100. Giving Answer as A Can you please elaborate on this.



Math Expert
Joined: 02 Sep 2009
Posts: 55618

Re: What fraction of this year's graduating students at a
[#permalink]
Show Tags
30 Nov 2016, 23:45
AmritaSarkar89 wrote: Bunuel wrote: What fraction of this year's graduating students at a certain college are males?
(1) Of this year's graduating students, 33 percent of the males and 20 percent of the females transfered from another college. (2) Of this year's graduating students, 25 percent transfered from another college.
Question: \(\frac{m}{m+f}=?\)
Obviously taken separately each statement is not sufficient.
(1)+(2) # of transferred students from (1) equals to \(033m+0.2f\) and from (2) it equals to \(0.25(m+f)\) > \(0.33m+0.2f=0.25m+0.25f\) > \(\frac{m}{f}=\frac{5}{8}\) > \(\frac{m}{m+f}=\frac{5}{13}\). Sufficient.
Answer: C. Just wondering since we are supposed to find the fraction and not the exact value. The first statement says that 33% of the students are male. So if we assume the total number of student is 100 then total males if 33. Even if the number increases by any factor the empirical value will always remain 33/100. Giving Answer as A Can you please elaborate on this. The red part is not correct. (1) says "Of this year's graduating students, 33 percent of the males and 20 percent of the females transferred from another college". Also, it's not clear what you mean by part in blue.
_________________



Director
Joined: 26 Oct 2016
Posts: 627
Location: United States
Concentration: Marketing, International Business
GPA: 4
WE: Education (Education)

Re: What fraction of this year's graduating students at a
[#permalink]
Show Tags
31 Jan 2017, 17:56
let's say M is the # of males in the graduating class (total), and F is the # of females. then statement (1) says 0.33M + 0.20F were transfers; statement (2) says 0.25(M + F) were transfers (i.e., 25% of everybody). since both of these are the # of transfers, set them equal: 0.33M + 0.20F = 0.25M + 0.25F 0.08M = 0.05F this gives you the ratio of males to females. Sufficient. Hence C.
_________________
Thanks & Regards, Anaira Mitch



Intern
Joined: 23 Mar 2014
Posts: 3

Re: What fraction of this year's graduating students at a
[#permalink]
Show Tags
04 Sep 2017, 12:48
Bunuel how come the answer is different when trying to calculate using fractions? .33m = m/3 .20f = f/5 .25 (m+f) = (m+f)/4 m/3+f/5=(m+f)/4 > (5m+3f)/15=(m+f)/4 > 20m+12f=15m+15f > 5m=3f or m/f=3/5 In your solution, m/f = 5/8. What am i forgetting here?



Math Expert
Joined: 02 Sep 2009
Posts: 55618

Re: What fraction of this year's graduating students at a
[#permalink]
Show Tags
04 Sep 2017, 22:05
FWU wrote: Bunuel how come the answer is different when trying to calculate using fractions? .33m = m/3 .20f = f/5 .25 (m+f) = (m+f)/4 m/3+f/5=(m+f)/4 > (5m+3f)/15=(m+f)/4 > 20m+12f=15m+15f > 5m=3f or m/f=3/5 In your solution, m/f = 5/8. What am i forgetting here? The point is 0.33 does not equal to 1/3. 0.33 = 33/100 while 1/3 = 0.3333....
_________________



NonHuman User
Joined: 09 Sep 2013
Posts: 11367

Re: What fraction of this year's graduating students at a
[#permalink]
Show Tags
17 Sep 2018, 06:38
Hello from the GMAT Club BumpBot! Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up  doing my job. I think you may find it valuable (esp those replies with Kudos). Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________




Re: What fraction of this year's graduating students at a
[#permalink]
17 Sep 2018, 06:38






