In a certain English class, 1/4 of the number of girls is equal to : GMAT Problem Solving (PS)
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 24 Jan 2017, 10:43

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# In a certain English class, 1/4 of the number of girls is equal to

Author Message
TAGS:

### Hide Tags

Manager
Joined: 03 Oct 2008
Posts: 62
Followers: 0

Kudos [?]: 28 [0], given: 0

In a certain English class, 1/4 of the number of girls is equal to [#permalink]

### Show Tags

06 Oct 2008, 10:23
2
This post was
BOOKMARKED
00:00

Difficulty:

25% (medium)

Question Stats:

70% (01:51) correct 30% (00:56) wrong based on 287 sessions

### HideShow timer Statistics

In a certain English class, 1/4 of the number of girls is equal to 1/6 of the total number of students. What is the ratio of the number of boys to the number of girls in the class?

A. 1 to 4
B. 1 to 3
C. 1 to 2
D. 2 to 3
E. 2 to 1
[Reveal] Spoiler: OA
Senior Manager
Joined: 04 Jan 2006
Posts: 279
Followers: 1

Kudos [?]: 37 [1] , given: 0

Re: In a certain English class, 1/4 of the number of girls is equal to [#permalink]

### Show Tags

06 Oct 2008, 11:22
1
KUDOS
1
This post was
BOOKMARKED
albany09 wrote:
In a certain English class, 1/4 of the number of girls is equal to 1/6 of the total number of students. What is the ratio of the number of boys to the number of girls in the class?

A. 1 to 4
B. 1 to 3
C. 1 to 2
D. 2 to 3
E. 2 to 1

Assume; g = number of girls, b = number of boys

Total number of students = b + g

g / 4 = (b + g) /6

6g = 4(b + g) = 4b + 4g
2g = 4b
2/4 = b/g
b/g = 1/2

The answer is C. 1 to 2.
SVP
Joined: 05 Jul 2006
Posts: 1743
Followers: 6

Kudos [?]: 318 [0], given: 49

Re: In a certain English class, 1/4 of the number of girls is equal to [#permalink]

### Show Tags

07 Oct 2008, 03:18
albany09 wrote:
In a certain English class, 1/4 of the number of girls is equal to 1/6 of the total number of students. What is the ratio of the number of boys to the number of girls in the class?

A. 1 to 4
B. 1 to 3
C. 1 to 2
D. 2 to 3
E. 2 to 1

1/4 g = 1/6 t thus g = 2/3t

B= 1/3t
b/g = (1/3) / (2/3) = 1/2 ..C
Manager
Joined: 25 May 2008
Posts: 196
Followers: 1

Kudos [?]: 8 [0], given: 0

Re: In a certain English class, 1/4 of the number of girls is equal to [#permalink]

### Show Tags

07 Oct 2008, 04:03
C. Use real numbers. 1/4 of the number of girls is 10, so are 60 students. The number of girls is 4X10=40 and the number of boys is 60-40=20. 20/40 = 1/2
Manager
Joined: 06 Feb 2010
Posts: 176
Schools: University of Dhaka - Class of 2010
GMAT 1: Q0 V0
GPA: 3.63
Followers: 61

Kudos [?]: 1182 [1] , given: 182

Re: In a certain English class, 1/4 of the number of girls is equal to [#permalink]

### Show Tags

31 Oct 2010, 03:12
1
KUDOS
3
This post was
BOOKMARKED
In a certain English Class, 1/4 of the number of girls is equal to 1/6 of the total number of students. What is the ratio of the number of boys to the number of girls in the class?
A) 1 to 4
B) 1 to 3
(C) 1 to 2
(D) 2 to 3
(E) 2 to 1
_________________

Practice Makes a Man Perfect. Practice. Practice. Practice......Perfectly

Critical Reasoning: http://gmatclub.com/forum/best-critical-reasoning-shortcuts-notes-tips-91280.html

Collections of MGMAT CAT: http://gmatclub.com/forum/collections-of-mgmat-cat-math-152750.html

MGMAT SC SUMMARY: http://gmatclub.com/forum/mgmat-sc-summary-of-fourth-edition-152753.html

Sentence Correction: http://gmatclub.com/forum/sentence-correction-strategies-and-notes-91218.html

Arithmatic & Algebra: http://gmatclub.com/forum/arithmatic-algebra-93678.html

I hope these will help to understand the basic concepts & strategies. Please Click ON KUDOS Button.

Intern
Joined: 27 Jul 2009
Posts: 20
Followers: 0

Kudos [?]: 13 [2] , given: 1

Re: In a certain English class, 1/4 of the number of girls is equal to [#permalink]

### Show Tags

31 Oct 2010, 04:13
2
KUDOS
1
This post was
BOOKMARKED
monirjewel wrote:
In a certain English Class, 1/4 of the number of girls is equal to 1/6 of the total number of students. What is the ratio of the number of boys to the number of girls in the class?
A) 1 to 4
B) 1 to 3
(C) 1 to 2
(D) 2 to 3
(E) 2 to 1

1/4 girls = 1/6 total
=> girls = 2/3 total

this implies, number of boys = 1/3 total

ratio of boys/girls = (1/3)/(2/3)
= 1/2

Answer : (C) 1 to 2
Manager
Joined: 01 Nov 2010
Posts: 181
Location: Zürich, Switzerland
Followers: 2

Kudos [?]: 38 [0], given: 20

Re: In a certain English class, 1/4 of the number of girls is equal to [#permalink]

### Show Tags

09 Nov 2010, 07:28
Consider a number with 4 and 6 as its factors- 24.

now 1/6 th of 24 = 1/4 th of girls------> 4=(1/4)g
So - Girls =16 and Boys=8
So ratio= 8/16 = 1/2
GMAT Club Legend
Joined: 09 Sep 2013
Posts: 13544
Followers: 578

Kudos [?]: 163 [0], given: 0

Re: In a certain English class, 1/4 of the number of girls is equal to [#permalink]

### Show Tags

12 Apr 2015, 17:38
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.
_________________
EMPOWERgmat Instructor
Status: GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Joined: 19 Dec 2014
Posts: 8339
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: 340 Q170 V170
Followers: 382

Kudos [?]: 2474 [1] , given: 164

Re: In a certain English class, 1/4 of the number of girls is equal to [#permalink]

### Show Tags

12 Apr 2015, 18:42
1
KUDOS
Expert's post
Hi All,

This question is perfect for TESTing VALUES and you can keep the Values really small (which will make the 'math' really easy)...

We're told that, in a class, 1/4 of the number of girls is equal to 1/6 of the total number of students. We're asked for the ratio of the number of boys to the number of girls in the class.

IF....
Number of Girls = 4

We're told that (1/4)(4) = (1/6)(Total)

1 = (1/6)(Total)
Total students = 6

Number of Boys = 6-4= 2

The ratio of Boys:Girls is 2:4 = 1 to 2

[Reveal] Spoiler:
C

GMAT assassins aren't born, they're made,
Rich
_________________

# Rich Cohen

Co-Founder & GMAT Assassin

# Special Offer: Save $75 + GMAT Club Tests 60-point improvement guarantee www.empowergmat.com/ ***********************Select EMPOWERgmat Courses now include ALL 6 Official GMAC CATs!*********************** GMAT Club Legend Joined: 09 Sep 2013 Posts: 13544 Followers: 578 Kudos [?]: 163 [0], given: 0 Re: In a certain English class, 1/4 of the number of girls is equal to [#permalink] ### Show Tags 19 Jul 2015, 07:47 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. _________________ Manager Joined: 28 Jun 2015 Posts: 139 Concentration: Finance, Economics GPA: 3.5 Followers: 0 Kudos [?]: 55 [0], given: 19 Re: In a certain English class, 1/4 of the number of girls is equal to [#permalink] ### Show Tags 19 Jul 2015, 08:23 LCM$$(4,6) = 12$$. So, let the total number of students in the class be 12. $$\frac{1}{6}(12) = 2 = \frac{1}{4}$$(number of girls). So, total number of girls in the class = $$4*2 = 8$$. Hence, the ratio of $$boys:girls = 4:8 = 1:2$$. Ans (C). _________________ I used to think the brain was the most important organ. Then I thought, look what’s telling me that. Optimus Prep Instructor Joined: 06 Nov 2014 Posts: 1782 Followers: 51 Kudos [?]: 393 [0], given: 21 Re: In a certain English class, 1/4 of the number of girls is equal to [#permalink] ### Show Tags 20 Jul 2015, 07:19 In a certain English class, 1/4 of the number of girls is equal to 1/6 of the total number of students. What is the ratio of the number of boys to the number of girls in the class? A. 1 to 4 B. 1 to 3 C. 1 to 2 D. 2 to 3 E. 2 to 1 Attachments Untitled.jpg [ 29.61 KiB | Viewed 4123 times ] _________________ # Janielle Williams Customer Support Special Offer:$80-100/hr. Online Private Tutoring
GMAT On Demand Course \$299
Free Online Trial Hour

Current Student
Joined: 09 Aug 2015
Posts: 99
GMAT 1: 770 Q51 V44
GPA: 2.3
Followers: 0

Kudos [?]: 19 [0], given: 6

In a certain English class, 1/4 of the number of girls is equal to [#permalink]

### Show Tags

01 Sep 2015, 13:21
Here is the straightforward approach without testing numbers:

if 1/4 of girls = 1/6 of the class, then 4 * 1/4 of the girls = 4 * 1/6 of the glass

so all the girls represent 4/6, then the boys must be 2/6, and the ratio is 1:2
Senior Manager
Affiliations: Harvard University (Class of '02)
Joined: 10 Jul 2015
Posts: 310
GMAT 1: 770 Q47 V48
WE: Education (Education)
Followers: 46

Kudos [?]: 268 [0], given: 42

In a certain English class, 1/4 of the number of girls is equal to [#permalink]

### Show Tags

30 Mar 2016, 23:48
Attached is a visual that should help. I used the classic "algebra to simplify, plug in numbers to finish" method. Please ignore the 15 x 60...it is from another question.
Attachments

Screen Shot 2016-03-31 at 12.47.13 AM.png [ 84.18 KiB | Viewed 2344 times ]

_________________

Harvard grad and 770 GMAT scorer, offering high-quality private GMAT tutoring, both in-person and via Skype, since 2002.

McElroy Tutoring

In a certain English class, 1/4 of the number of girls is equal to   [#permalink] 30 Mar 2016, 23:48
Similar topics Replies Last post
Similar
Topics:
Exactly 1/3 of the children in a certain class are girls. If there 3 10 Nov 2015, 23:17
2 The ratio of the number of boys to the number of girls in a certain 2 03 Apr 2015, 13:01
8 At a certain school, the ratio of the number of English 5 30 Mar 2013, 08:49
6 A gym class can be divided into 8 teams with an equal number 9 03 Dec 2012, 03:20
6 In the interior of a forest, a certain number of apes equal to the squ 5 15 Nov 2010, 20:39
Display posts from previous: Sort by