It is currently 23 Jun 2017, 22:37

### 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's grade was the 90th percentile of the class. Of the 100

Author Message
Manager
Joined: 28 Jul 2004
Posts: 136
Location: Melbourne
Schools: Yale SOM, Tuck, Ross, IESE, HEC, Johnson, Booth
A's grade was the 90th percentile of the class. Of the 100 [#permalink]

### Show Tags

27 Dec 2008, 01:19
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A's grade was the 90th percentile of the class. Of the 100 grades from another class, 19 were higher than A, and rest were lower. If no other grade was same as A, then A's grade was what percentile of the grades of the two classes combined.

a) 72nd
b) 80th
c) 81st
d) 85th
e) 92nd
_________________

kris

Intern
Joined: 27 Nov 2008
Posts: 5
Re: what is A's Percentile ? [#permalink]

### Show Tags

27 Dec 2008, 04:00
Since there is no information about the number of students in class 1, assume there are 100 students to make the calculations easy:

Class 1: A is at 90th percentile so there are 10 student higher than A
10
A
89

Class 2: A has 19 students higher than him
19
A
80

Combining: Out of the total ( actually199 students, since A is appearing once in each)
29
A
169

that makes 170th out 199(~200 students) which is 85th percentile.

Manager
Joined: 28 Jul 2004
Posts: 136
Location: Melbourne
Schools: Yale SOM, Tuck, Ross, IESE, HEC, Johnson, Booth
Re: what is A's Percentile ? [#permalink]

### Show Tags

27 Dec 2008, 04:28
The answer is right but I missed one additional info in the question i.e. there are 80 grades in A's class.

Do you arrive at different answer with this infof?
_________________

kris

Manager
Joined: 28 Jul 2004
Posts: 136
Location: Melbourne
Schools: Yale SOM, Tuck, Ross, IESE, HEC, Johnson, Booth
Re: what is A's Percentile ? [#permalink]

### Show Tags

27 Dec 2008, 04:31
Ok.. I got the explanation. Thanks a lot mate.
_________________

kris

Manager
Joined: 10 Aug 2008
Posts: 75
Re: what is A's Percentile ? [#permalink]

### Show Tags

27 Dec 2008, 11:04
krishan wrote:
Ok.. I got the explanation. Thanks a lot mate.

BTW whats the explanation ?
Manager
Joined: 26 Dec 2008
Posts: 58
Schools: Booth (Admit R1), Sloan (Ding R1), Tuck (R1)
Re: what is A's Percentile ? [#permalink]

### Show Tags

27 Dec 2008, 23:57
krishan wrote:
The answer is right but I missed one additional info in the question i.e. there are 80 grades in A's class.

Do you arrive at different answer with this infof?

VP
Joined: 05 Jul 2008
Posts: 1408
Re: what is A's Percentile ? [#permalink]

### Show Tags

28 Dec 2008, 15:03
amopk wrote:
Since there is no information about the number of students in class 1, assume there are 100 students to make the calculations easy:

Class 1: A is at 90th percentile so there are 10 student higher than A
10
A
89

Class 2: A has 19 students higher than him
19
A
80

Combining: Out of the total ( actually199 students, since A is appearing once in each)
29
A
169

that makes 170th out 199(~200 students) which is 85th percentile.

Good one. If the answers were closer 85, 86 I would have gotten this wrong. We have to remember that no one scores in the 100th percentile.
Re: what is A's Percentile ?   [#permalink] 28 Dec 2008, 15:03
Display posts from previous: Sort by