• Board contributors include instructors with "800" GMAT scores.
  • 95% of posts have replies within 24 hours.
  • Join for discounts with 800score, VeritasPrep and ManhattanGMAT


FAQ  - Register  - Search - Login 

All times are UTC - 7 hours




Post new topic Reply to topic  [ 2 posts ] 
Author Message
 Post subject: GMAT Percentage
PostPosted: Mon May 13, 2013 10:08 am 
Offline
User avatar

Joined: Tue Apr 13, 2010 8:48 am
Posts: 480
For positive x and y if x/y is n% of y, then what percent must x be of y?

A. (y × n)%
B. (n/y)%
C. (√n)%
D. (n²)%
E. (100 – n)%

(A) The statement x/y is n% of y means that:
x/y = (n / 100) × y
x = y × (y × n / 100)
Therefore x is (y × n)% of y.
The right answer is choice (A).
----------
Sometimes I get confused with the mathematical sentences and I do not know what they are asking exactly. Is there are way I can understand what they are asking for? Any rule or nemotehcnique rule which makes this easier for me?


Top
 Profile  
 
 Post subject: Re: GMAT Percentage
PostPosted: Mon May 13, 2013 10:09 am 
Offline
User avatar

Joined: Fri Apr 09, 2010 2:11 pm
Posts: 456
The best way to fully understand what a question is asking for, is to read that question over, paying attention to EACH WORD. Along the way you should be asking yourself "what does this word stand for? Why is it used here?".
And of course, you should be acquainted with the topic of a question.

For example, let's take a look at the statement of this question:
"For any positive x and y if x/y is n% of y, then what percent must x be of y?"

positive x and y - means that x and y are unconditioned, but positive real numbers
x/y is n% of y - means that x/y = (n / 100) × y
THE MAIN QUESTION:
what percent - means to find the number ___%.
percent ... x be of y - means x × (___% / 100%) = y.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC - 7 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Template made by DEVPPL -
phpBB SEO
 
GMAT(TM) and GMAT CAT (TM) are registered trademarks of the Graduate Management Admission Council(TM). The Graduate Management Admission Council(TM) does not endorse, nor is affiliated in any way with the owner or any content of this site.