Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 24 Jun 2016, 21:03

### 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 class of 30 students, 17 students study Chinese, and r

Author Message
TAGS:

### Hide Tags

Director
Joined: 07 Jun 2004
Posts: 613
Location: PA
Followers: 3

Kudos [?]: 542 [1] , given: 22

In a class of 30 students, 17 students study Chinese, and r [#permalink]

### Show Tags

09 Sep 2010, 07:52
1
KUDOS
1
This post was
BOOKMARKED
00:00

Difficulty:

55% (hard)

Question Stats:

59% (02:17) correct 41% (01:14) wrong based on 137 sessions

### HideShow timer Statistics

In a class of 30 students, 17 students study Chinese, and r students study Japanese. Every student studies either Chinese, Japanese, or both. How many students study both Chinese and Japanese?

(1) r = 14
(2) Thirteen students take only Japanese.
[Reveal] Spoiler: OA

_________________

If the Q jogged your mind do Kudos me : )

Current Student
Joined: 12 Jun 2009
Posts: 1847
Location: United States (NC)
Concentration: Strategy, Finance
Schools: UNC (Kenan-Flagler) - Class of 2013
GMAT 1: 720 Q49 V39
WE: Programming (Computer Software)
Followers: 22

Kudos [?]: 229 [0], given: 52

### Show Tags

09 Sep 2010, 09:21
rxs0005 wrote:
In a class of 30 students, 17 students study Chinese, and r students study Japanese. Every student studies either Chinese, Japanese, or both. How many students study both Chinese and Japanese?

(1) r = 14
(2) Thirteen students take only Japanese.

1.so we have C=17 and r=14. so we can see the overlap here. SUFF
2. so we know 13 take only japanese so we have 17 students left who study chinese BUT we dont know the dual language students so INSUFF
_________________

Math Expert
Joined: 02 Sep 2009
Posts: 33489
Followers: 5925

Kudos [?]: 73347 [0], given: 9902

### Show Tags

09 Sep 2010, 09:55
Expert's post
rxs0005 wrote:
In a class of 30 students, 17 students study Chinese, and r students study Japanese. Every student studies either Chinese, Japanese, or both. How many students study both Chinese and Japanese?

(1) r = 14
(2) Thirteen students take only Japanese.

{Total} = {Chinese} + {Japanese} - {Both} --> 30=17+{Japanese} - {Both} --> {Japanese} - {Both}=13.

Question: {Both}=?

(1) {Japanese}=14 --> 14-{Both}=13 --> {Both}=1. Sufficient.

(2) {Japanese} - {Both}=13 --> the same info as in stem. Not sufficient.

_________________
GMAT Club Legend
Joined: 09 Sep 2013
Posts: 10161
Followers: 480

Kudos [?]: 124 [0], given: 0

Re: In a class of 30 students, 17 students study Chinese, and r [#permalink]

### Show Tags

14 Feb 2014, 05:48
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.
_________________
Current Student
Joined: 06 Sep 2013
Posts: 2035
Concentration: Finance
GMAT 1: 770 Q0 V
Followers: 46

Kudos [?]: 473 [0], given: 355

Re: In a class of 30 students, 17 students study Chinese, and r [#permalink]

### Show Tags

25 May 2014, 08:24
Just to illustrate

C No C Total
J r-13 13 r

No J 30-r 0 30-r

Total 17 13 30

Statement 1

Gives r=14 then, 14-13=1 study both

Sufficient

Statement 2

Insufficient

Re: In a class of 30 students, 17 students study Chinese, and r   [#permalink] 25 May 2014, 08:24
Similar topics Replies Last post
Similar
Topics:
2 In a class of 160 students, the number of students studying German 1 17 Apr 2016, 18:08
3 Each of the 30 students in a class is either male or female 4 30 Sep 2012, 00:03
62 For the students in class A, the range of their heights is r 19 23 Feb 2012, 08:12
1 For the students in class A, the range of heights is "r 5 22 Oct 2011, 23:26
6 Each of the 30 students in a class is either male or female, 6 21 Sep 2009, 18:32
Display posts from previous: Sort by