percentile

Class 1
90th percentile of 80 = 9/10 * 80 = 72 (71 below, 8 above)

Class 2
xth percentile of 100 = x% * 100 = 100 - 19
x * 100 = 81
x = 81/100
= .81 or 81%

Together
Her combined grade rank / Possible ranks
(72 + 81) / (80 + 100)
153 / 180
85% or 85th percentile.

D.

Quote

sanju09: GMAT Instructor; Posts: 3650; Joined: Wed Jan 21, 2009 4:27 am; Location: India; Thanked: 267 times; Followed by:80 members; GMAT Score:760

by sanju09 » Wed Apr 08, 2009 6:07 am

Amy was the 90th percentile of the 80 grades for her class, therefore, 10% are higher than Amy's, 10%*80 = 8.

19 of the other class was higher than Amy. Totally, 8 + 19 = 27

Then, the percentile is:

(180 - 27)/180 = 85/100

The mind is everything. What you think you become. -Lord Buddha

Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com

Quote

Post new topic Post Reply

• Page 1 of 1

5/5

5 Star (479 Reviews)

"Target Test Prep is the closest to the official version of the GMAT exam, about 99% accuracy in terms of the quality and quantity of information. The course has excellently created singular sets of focused lessons and tests for every possible topic that one could come across in the official GMAT exam."

"The TTP course maximizes the efficiency of the time you spend studying. It will take time and effort but I could almost guarantee that if you complete the course exactly as it is laid out you will get an amazing score. They also have a very responsive team willing to help with any questions you might have."

"TTP has two things that I think no other test prep company offers: A teaching approach that reinforces understanding and an attitude that will give you the mental preparedness needed to succeed on the test. TTP gives you a deep understanding of the concept you need to know while teaching you how to think."

Write a Review