Find all School-related info fast with the new School-Specific MBA Forum
Learn more about the recent changes... close

It is currently 23 May 2013, 06:29
Customize  |  Hide

Search
Register
New posts
Unanswered

Forty percent of the rats included in an experiment were

  Question banks Downloads My Bookmarks Reviews  
  Oldest Best Reply
Search for:
 
Print view
First unread post
Author Message
TAGS:
Manager
Manager
Joined: 07 Jul 2003
Posts: 60
Followers: 2

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

Forty percent of the rats included in an experiment were [#permalink] New post 09 Feb 2004, 12:47
Forty percent of the rats included in an experiment were male rats. If some of the rats died during the experiment and 30 percent of the rats that died were male rats, what was the ratio of the death rate among the male rats to the death rate among the female rats?

(A) 9/14 (B) 3/4 (C) 9/11
(D) 6/7 (E) 7/8
_________________

Attain Moksha

Director
Director
Joined: 03 Jul 2003
Posts: 716
Followers: 2

Kudos [?]: 4 [0], given: 0

GMAT Tests User
 [#permalink] New post 09 Feb 2004, 12:52
Ans: A

The key is death rate, which is number of dead rat to total number of rate.

Last edited by kpadma on 09 Feb 2004, 15:18, edited 2 times in total.
SVP
SVP
User avatar
Joined: 30 Oct 2003
Posts: 1963
Location: NewJersey USA
Followers: 3

Kudos [?]: 25 [0], given: 0

GMAT Tests User
 [#permalink] New post 09 Feb 2004, 14:11
Let T be total rats, M are male, F are female, D be total rats dead, MD male dead, FD female dead

M = 0.4T F = 0.6T
MD = 0.3D FD = 0.7D

Death rate of male = x = 0.3D/0.4T
Death rate of female = y = 0.7D/0.6T
x/y = 0.3D/0.4T * 0.6T/0.7D = 9/14

I believe answer should be A.
  [#permalink] 09 Feb 2004, 14:11
    Similar topics Author Replies Last post
Similar
Topics:
 New posts Forty percent of the rats included in an experiment were aps_can 6 26 Aug 2003, 14:09
New posts Forty percent of the rats included in an experiment were Dr_Friedrich 2 19 Jan 2005, 06:36
New posts Forty percent of the rats included in an experiment were july05 3 17 Jul 2005, 06:04
New posts Forty percent of the rats included in an experiment were sunilgupta 2 29 Jul 2007, 00:26
New posts Forty percent of the rats included in an experiment were elmagnifico 3 29 Aug 2008, 15:33
Display posts from previous: Sort by

Forty percent of the rats included in an experiment were

  Question banks Downloads My Bookmarks Reviews  
Print view
First unread post

Moderators: Bunuel, VeritasPrepKarishma

Search for:


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

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®.

Main navigation

GMAT Resources

Partners

MBA Resources

www.gmac.com|www.mba.com