M12 Q 3 : Retired Discussions [Locked]
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 21 Jan 2017, 04:12

### 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

# M12 Q 3

Author Message
Manager
Joined: 19 Nov 2010
Posts: 91
Followers: 6

Kudos [?]: 159 [0], given: 9

### Show Tags

05 Apr 2012, 17:45
In a bunch of letters, 60 were found to be anonymous and typewritten. If 15 percent of the typewritten letters were anonymous, how many letters that were not anonymous were typewritten?

120
180
340
360
400

Explanation says 15 % of typewritten = 60 so typewritten = 400. How can you do that with out knowing the number for annonymous + not typewritten portion in the 2x2 metrix?

Thnaks.
Intern
Joined: 27 Feb 2012
Posts: 36
Followers: 22

Kudos [?]: 658 [0], given: 20

### Show Tags

05 Apr 2012, 20:59
Anonymous & Typewritten: 60 letters
Annoymous & Typewritten: 15% of all Typewritten
Non-Annoymous & Typewritten: 85% of all Typewritten
All typewritten: 60/15% = 400
_________________

Question Bank Extracted from the GMATPrep Software:
857 Verbal Questions: http://gmatclub.com/forum/gmatprep-verbal-question-bank-130070.html
393 Quant PS Questions: http://gmatclub.com/forum/gmatprep-ps-question-bank-130073.html
436 Quant DS Questions: http://gmatclub.com/forum/gmatprep-ds-question-bank-130069.html

Intern
Joined: 27 Feb 2012
Posts: 36
Followers: 22

Kudos [?]: 658 [0], given: 20

### Show Tags

05 Apr 2012, 21:04
The question only asks for typewritten letters, never did it say anything about non-typewritten.

You can look at it this way also:
"60 out of all letters are anonymous.
15% out of all letters are anonymous.
How many letters are non-anonymous?"
_________________

Question Bank Extracted from the GMATPrep Software:
857 Verbal Questions: http://gmatclub.com/forum/gmatprep-verbal-question-bank-130070.html
393 Quant PS Questions: http://gmatclub.com/forum/gmatprep-ps-question-bank-130073.html
436 Quant DS Questions: http://gmatclub.com/forum/gmatprep-ds-question-bank-130069.html

Intern
Joined: 27 Feb 2012
Posts: 36
Followers: 22

Kudos [?]: 658 [0], given: 20

### Show Tags

05 Apr 2012, 21:14

 . Anonymous Non-Anonymous Total Typewritten 60 or 15%*x x - 60 x Non-typewritten ? ? ? Total ? ? ?

*Let x be total number of typewritten letters
just solve for x-60 and you get the answer
_________________

Question Bank Extracted from the GMATPrep Software:
857 Verbal Questions: http://gmatclub.com/forum/gmatprep-verbal-question-bank-130070.html
393 Quant PS Questions: http://gmatclub.com/forum/gmatprep-ps-question-bank-130073.html
436 Quant DS Questions: http://gmatclub.com/forum/gmatprep-ds-question-bank-130069.html

Senior Manager
Joined: 12 Mar 2012
Posts: 369
Concentration: Operations, Strategy
Followers: 2

Kudos [?]: 169 [0], given: 31

### Show Tags

05 Apr 2012, 21:48
given,

60=A+T

Let T=X

0.15X=60
=>X=400

_________________

Practice Practice and practice...!!

If there's a loophole in my analysis--> suggest measures to make it airtight.

Manager
Joined: 19 Nov 2010
Posts: 91
Followers: 6

Kudos [?]: 159 [0], given: 9

### Show Tags

10 Apr 2012, 07:10
Since the Q gives us the relationship (15%) between "all Typewritten" and "all Annonymous", should't we interpret as below?

Thanks!
Attachments

Picture2.jpg [ 9.2 KiB | Viewed 811 times ]

Intern
Joined: 27 Feb 2012
Posts: 36
Followers: 22

Kudos [?]: 658 [0], given: 20

### Show Tags

10 Apr 2012, 18:01
"If 15 percent of the TYPEWRITTEN letters were anonymous"

So 15%*TYPEWRITTEN = ANONYMOUS

Does it include the non-typewritten anonymous letter?
_________________

Question Bank Extracted from the GMATPrep Software:
857 Verbal Questions: http://gmatclub.com/forum/gmatprep-verbal-question-bank-130070.html
393 Quant PS Questions: http://gmatclub.com/forum/gmatprep-ps-question-bank-130073.html
436 Quant DS Questions: http://gmatclub.com/forum/gmatprep-ds-question-bank-130069.html

Re: M12 Q 3   [#permalink] 10 Apr 2012, 18:01
Similar topics Replies Last post
Similar
Topics:
1 M12 Q 26 7 03 Jan 2010, 18:21
m12 Q5 1 29 Aug 2009, 14:07
11 M12 Q32 20 07 Dec 2008, 09:32
7 m12 q4 16 13 Sep 2008, 12:53
27 M12 Q17 29 09 Aug 2008, 06:21
Display posts from previous: Sort by

# M12 Q 3

Moderator: Bunuel

 Powered by phpBB © phpBB Group and phpBB SEO Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.