Author 
Message 
TAGS:

Hide Tags

Manager
Joined: 14 Mar 2007
Posts: 235

Students in five sections, F, G, H, J and K, of an [#permalink]
Show Tags
23 Apr 2007, 10:09
Question Stats:
32% (03:02) correct
68% (00:32) wrong based on 37 sessions
HideShow timer Statistics
Students in five sections, F, G, H, J and K, of an introductory accounting course were
given a final exam. What is the average test score on all the students in the five
sections ?
(1) The average of the final exam scores of students in sections F, G, and H was 72.
(2) The average of the final exam scores of students in sections J and K was 78.



Senior Manager
Joined: 01 Jan 2007
Posts: 322

Re: stats [#permalink]
Show Tags
23 Apr 2007, 10:31
andrehaui wrote: Students in five sections, F, G, H, J and K, of an introductory accounting course were given a final exam. What is the average test score on all the students in the five sections ?
(1) The average of the final exam scores of students in sections F, G, and H was 72. (2) The average of the final exam scores of students in sections J and K was 78.
Satement1>(F+G+H)/3=72
hence F+G+H=216.
We don't have any information about J and K. So insufficient
Statement2>J+K=156. so this statement is also insufficient.
Both the statements to combine is sufficient and hence answere is C.
Javed.
Cheers!



Director
Joined: 14 Jan 2007
Posts: 774

Students in five sections, F, G, H, J and K, of an introductory accounting course were
given a final exam. What is the average test score on all the students in the five
sections ?
(1) The average of the final exam scores of students in sections F, G, and H was 72.
(2) The average of the final exam scores of students in sections J and K was 78.
Statement1: Total scores of section F,G and H are = 72*3 = 216
No clue for the average score for the all students. So INSUFF
Statement2: Total scores of section J and K are = 78*2 = 156
No clue for the average score for the all students. So INSUFF
Putting them together:
Total scores of the students in all five sections = 216+156=372
The average score of the all students in all sections = total scores od all students/ Total number od students in all sections
Here total number od students in all sections is not known.
So INSUFF
Hence Answer is 'E'



VP
Joined: 03 Apr 2007
Posts: 1342

Re: stats [#permalink]
Show Tags
23 Apr 2007, 13:48
andrehaui wrote: Students in five sections, F, G, H, J and K, of an introductory accounting course were given a final exam. What is the average test score on all the students in the five sections ?
(1) The average of the final exam scores of students in sections F, G, and H was 72. (2) The average of the final exam scores of students in sections J and K was 78.
Answe is E:
avg score = total score/total nos of students.
Since the information for "total score" or "total nos of students" cannot be obtained from the individual statements or after combining them, the given information is not sufficeint and henc eE



GMAT Club Legend
Joined: 07 Jul 2004
Posts: 5043
Location: Singapore

Looking at the statments, we need E. Both lacks the final piece of clue  # of students. No need for more workings.



Senior Manager
Joined: 01 Jan 2007
Posts: 322

well this question got me at the frist but now the picture is more clear its E.
Javed.
Cheers!



Intern
Joined: 17 Aug 2010
Posts: 1

Re: stats [#permalink]
Show Tags
17 Aug 2010, 01:53
Also looking at the statments, we need E. Both lacks the final piece of clue  # of students. No need for more workings.
_________________
Remixen



Manager
Joined: 07 Aug 2010
Posts: 79

Re: stats [#permalink]
Show Tags
10 Oct 2010, 16:08
BlitzHN wrote: C yeah, actually E. no data on num of students.
_________________
Click that thing  Give kudos if u like this












Similar topics 
Author 
Replies 
Last post 
Similar Topics:




A newsstand sells newspapers H and G and J. What was the total number

Bunuel 
2 
12 Apr 2017, 11:49 



A newsstand sells newspapers H and G and J. What was the total number

Bunuel 
3 
18 Mar 2017, 08:25 



Here G, H, I, J, and K are consecutive whole numbers. When is G× H× I

SajjadAhmad 
4 
21 Feb 2017, 03:45 



What is the value of j if h is k% of j?

Bunuel 
1 
24 Jan 2016, 07:39 

17


E, F, G, and H are the vertices of a polygon. Is polygon

jscott319 
12 
31 Dec 2016, 02:50 



