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

 It is currently 28 Sep 2016, 00:10

### 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

# A college has two departments, finance dept. and accounting

Author Message
Manager
Joined: 07 Jul 2005
Posts: 106
Followers: 1

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

A college has two departments, finance dept. and accounting [#permalink]

### Show Tags

23 Nov 2005, 19:51
00:00

Difficulty:

(N/A)

Question Stats:

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

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A college has two departments, finance dept. and accounting dept. The ratio of the teachers in two dept. is 2:1. What is the ratio of the number of teachers doing a part-time job to the number of the teachers not doing?

1) 1/2 of the teachers in accounting dept. do part-time jobs.
2) The ratio of the teachers doing part-time jobs in two departments is 3:4
SVP
Joined: 24 Sep 2005
Posts: 1890
Followers: 18

Kudos [?]: 271 [0], given: 0

### Show Tags

23 Nov 2005, 20:23
arsenicdoped wrote:
A college has two departments, finance dept. and accounting dept. The ratio of the teachers in two dept. is 2:1. What is the ratio of the number of teachers doing a part-time job to the number of the teachers not doing?

1) 1/2 of the teachers in accounting dept. do part-time jobs.
2) The ratio of the teachers doing part-time jobs in two departments is 3:4

1) we don't know the number of teachers not/do the part-time jobs --> insuff

2). The ratio of the teachers doing part-time jobs in two departments is 3:4---> we don't know the order of this ratio --> insuff anyway

1and 2: as we don't know the order of the ratio -->insuff

I don't know if the question assume the ratio is of finance to accounting or not
Manager
Joined: 07 Jul 2005
Posts: 106
Followers: 1

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

### Show Tags

23 Nov 2005, 20:30
I am myself not very sure of the question. But if we assume the order of the second one given. I think C will be the correct answer.

Any comment on my reasoning.
GMAT Club Legend
Joined: 07 Jul 2004
Posts: 5062
Location: Singapore
Followers: 30

Kudos [?]: 329 [0], given: 0

### Show Tags

23 Nov 2005, 20:38
Note:
1) If order is assumed in Statement (2), this is the working:

Using (1), we do not know how many part time teachers in finance dept. (1) is not sufficient.
Using (2), we have:

# of teachers = x
# of finance teachers = 2x/3
# of accounting teachers = x/3
# of part time finance teachers = 3x/7
$of part time accounting teachers = 4x/7 We can now compute ratio of full time: part time teachers. (2) is sufficient. Ans: B However, if order cannot be assumed, then the answer is D. Manager Joined: 30 Aug 2005 Posts: 186 Followers: 1 Kudos [?]: 14 [0], given: 0 [#permalink] ### Show Tags 27 Nov 2005, 07:13 ans is C. I drew the grid, Plugged in a value for total number of employees. Director Joined: 26 Sep 2005 Posts: 576 Location: Munich,Germany Followers: 1 Kudos [?]: 17 [0], given: 0 [#permalink] ### Show Tags 24 Dec 2005, 02:40 B is suff here. (order assumed) Manager Joined: 31 Jan 2005 Posts: 143 Followers: 1 Kudos [?]: 1 [0], given: 0 [#permalink] ### Show Tags 24 Dec 2005, 06:58 i got with B.....order assumed......wats the OA Manager Joined: 24 Oct 2005 Posts: 52 Followers: 1 Kudos [?]: 5 [0], given: 0 [#permalink] ### Show Tags 24 Dec 2005, 14:35 A college has two departments, finance dept. and accounting dept. The ratio of the teachers in two dept. is 2:1. What is the ratio of the number of teachers doing a part-time job to the number of the teachers not doing? 1) 1/2 of the teachers in accounting dept. do part-time jobs. 2) The ratio of the teachers doing part-time jobs in two departments is 3:4 1) -- We don't know how many part-time teachers are there in Finance dept..--> Insuff 2) Assuming the ratio 3:4 is finance : accounting respectively, then I go with B, 2 alone is Sufficient If this question comes in the real exam the same way as it appears here, I would pick E. may be this is one of the GMAT Traps. Senior Manager Joined: 11 Nov 2005 Posts: 328 Location: London Followers: 1 Kudos [?]: 11 [0], given: 0 [#permalink] ### Show Tags 24 Dec 2005, 15:10 I think it is C. Explanation, lets assume the total number of teachers 24 24:- 16 teachers in Fin and 8 teachers in Acc Stat 1. half teacher in Acc is part time, so 4 PT and 4FT - NOT SUFFICIENT Stat2. PT job in two department is 3:4, means 3 PT teacher in Fin for every 4 PT teacher in Acc, NOT SUFFICIENT However combined together stat 1&2. when there are 8 teachers in Acc, and half is PT, means 4 are PT. This is same as 3 PT in Fin, so 13 FT and 3 PT. THE RATIO OF PT/FT = (3+4)/(13+4) =7/17 both statement together are sufficient! (assuming theorder is same) Any comments? please! Senior Manager Joined: 11 Nov 2005 Posts: 328 Location: London Followers: 1 Kudos [?]: 11 [0], given: 0 [#permalink] ### Show Tags 24 Dec 2005, 15:19 if the number of teachers is 48 ,for example, how will you go around with B only? ywilfred wrote: Note: 1) If order is assumed in Statement (2), this is the working: Using (1), we do not know how many part time teachers in finance dept. (1) is not sufficient. Using (2), we have: # of teachers = x # of finance teachers = 2x/3 # of accounting teachers = x/3 # of part time finance teachers = 3x/7$ of part time accounting teachers = 4x/7

We can now compute ratio of full time: part time teachers.

(2) is sufficient.

Ans: B

However, if order cannot be assumed, then the answer is D.
CEO
Joined: 20 Nov 2005
Posts: 2911
Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008
Followers: 23

Kudos [?]: 250 [0], given: 0

### Show Tags

24 Dec 2005, 23:38
If order is assumed as (F:A) then its C else E.

Here I go
F is finance, A is accounting. 1 is permanent teachers and 2 is part-time teachers. So given is

F1+F2 : A1+A2 = 2:1

1) A1:A2 = 1:1
So F1+F2 : A + A = 2:1 there is no information about F2 so we can not find F2 + A2 : F1+ A1. INSUFF
2) F2: A2 = 3:4. By this we can not find the sum F2 + A2 or F1 + A1. INSUFF

Both combined

A1:A2 = 2:1 and F2:A2 = 3:4
Now assume total = x
From given F:A = 2x/3 : x/3

From 1 A1 = x/6 and A2 = x/6

From 2 F2 = (x/6)* (3/4) = x/8. So F1 = (2x/3) - x/8 = 13x/24

So (F2+A2)/(F1+A1) = [(x/8) + (x/6)] / [(13x/24) + (x/6)] = 7/17 SUFF
_________________

SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

Display posts from previous: Sort by