Register    Login    Search    Rss Feeds

Forums Home » Ask An Instructor » GMAT Math » GMAT Prep Math


 Page 1 of 1 [ 3 posts ] 



  Print view Print view Previous topic Previous topic | Next topic Next topic
 

Country R and its annual income

Author Message
Guest
 Post subject: Country R and its annual income
 Post Posted: Sat Sep 06, 2008 6:31 pm 
Q: Before being simplified, the instructions for computing income tax in country R were to add 2 percent of one's annual income to the average (arithmetic mean) of 100 units of country R's currency and 1 percent of one's annual income. Which of the following represents the simplified formula for computing the income tax in country R's currency, for a person in that country whose annual income is I?
a) 50 + (I/200)
b) 50 + (3I/100)
c) 50 + (I/40)
d) 100 + (I/50)
e) 100 + (3I/100)

Answer: C

Your help is greatly appreciated! I have no clue.
Top 
Quizzy
 Post subject: This looks simple....
 Post Posted: Sat Sep 06, 2008 6:44 pm 
Lets say Income is I

1% of income = I/100
2% of Income = 2I/100

Arithmetic Mean = (I/100 + 100C)/2 (Where C denotes the currency)

Therefore Total = 2I/100 + I/200 + 50
= 5I/200 + 50
Therefore C
Top 
RonPurewal
 Post subject: Re: This looks simple....
 Post Posted: Mon Sep 29, 2008 5:37 am 
Offline
ManhattanGMAT Staff


Posts: 6765
Quizzy wrote:
Lets say Income is I

1% of income = I/100
2% of Income = 2I/100

Arithmetic Mean = (I/100 + 100C)/2 (Where C denotes the currency)

Therefore Total = 2I/100 + I/200 + 50
= 5I/200 + 50
Therefore C


well done.

the principal challenge of this problem is the sheer length of the wording in the problem statement: there are just a ton of words crammed into a rather small amount of space.

when you parse something like this, you should try your best to break it down into smaller parts:
add 2 percent of one's annual income to the average (arithmetic mean) of 100 units of country R's currency and 1 percent of one's annual income.
this is somewhat difficult to do on gmat problems, because you don't have a pre-printed piece of paper on which you can simply block things off and underline things; you'll have to write this stuff out on the yellow pad with which you're supplied at the exam.
Top 
Display posts from previous:  Sort by  
 
 Page 1 of 1 [ 3 posts ] 





Who is online

Users browsing this forum: No registered users and 0 guests

 
 

 
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: