It is currently 23 Feb 2018, 00:46

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

can you someone get me the breakup of this? ds-q8.JPG

Author Message
Manager
Joined: 16 Jan 2008
Posts: 102
can you someone get me the breakup of this? ds-q8.JPG [#permalink]

Show Tags

19 Dec 2008, 23:25
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.

can you someone get me the breakup of this?

Attachment:

ds-q8.JPG [ 30.98 KiB | Viewed 702 times ]
Manager
Joined: 27 Apr 2008
Posts: 110

Show Tags

20 Dec 2008, 01:32
1
KUDOS
C

1--> average salary= A = M+5000, where M=average salart of managers

insuff

2--> average salary= A = D-15000, where D=average salary of directors

insuff

together--> M+5000=D-15000 --> D-M=20,000

two ways

the short way:

Num_D/Num_M= 1/(15000/5000)= 1/3 --> 1/4 are directors and 3/4 are managers

=> suff

the long way:

(num_m*m + num_D*(20000+m))/(num_m+num_D)=m+5000

=>num_m*m + num_d*20000+num_d*m = num_m*m+mun_m*5000+num_d*m+num_d*5000

=> num_d*20000 = num_m*5000+num_d*5000

=> 15000*Num_d = 5000* num_m

=> num_D/num_m=5000/15000=1/3 --> 1/4 are directors and 3/4 are managers

=> suff
Manager
Joined: 16 Jan 2008
Posts: 102

Show Tags

20 Dec 2008, 03:51
rino wrote:
C

1--> average salary= A = M+5000, where M=average salart of managers

insuff

2--> average salary= A = D-15000, where D=average salary of directors

insuff

together--> M+5000=D-15000 --> D-M=20,000

two ways

the short way:

Num_D/Num_M= 1/(15000/5000)= 1/3 --> 1/4 are directors and 3/4 are managers

=> suff

the long way:

(num_m*m + num_D*(20000+m))/(num_m+num_D)=m+5000

=>num_m*m + num_d*20000+num_d*m = num_m*m+mun_m*5000+num_d*m+num_d*5000

=> num_d*20000 = num_m*5000+num_d*5000

=> 15000*Num_d = 5000* num_m

=> num_D/num_m=5000/15000=1/3 --> 1/4 are directors and 3/4 are managers

=> suff

Hey rino thanks! I could come to C with judgement, but wasn't sure.
good explaination! +1.
Re: GMATPREP-DS   [#permalink] 20 Dec 2008, 03:51
Display posts from previous: Sort by