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

It is currently 18 May 2013, 21:06
Customize  |  Hide

Search
Register
New posts
Unanswered

One-fifth of the light switches produced by a cer tain

  Question banks Downloads My Bookmarks Reviews  
  Oldest Best Reply
Search for:
 
Print view
First unread post
Author Message
TAGS:
Intern
Intern
Joined: 18 Sep 2005
Posts: 5
Followers: 0

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

One-fifth of the light switches produced by a cer tain [#permalink] New post 15 Oct 2005, 23:17
19. One-fifth of the light switches produced by a cer¬tain factory are defective. Four-fifths of the defective switches are rejected and of the nondefective switches are rejected by mistake. If all the switches not rejected are sold, what percent of the switches sold by the factory are defective?
(A) 4%
(B) 5%
(C) 6.25%
(D) 11%
(E) 16%
Senior Manager
Senior Manager
Joined: 02 Oct 2005
Posts: 307
Followers: 1

Kudos [?]: 2 [0], given: 0

GMAT Tests User
 [#permalink] New post 15 Oct 2005, 23:41
Looks like something is missing in the question. Please check the following part.

Quote:
switches are rejected and of the nondefective switches are rejected by mistake


There is no fraction or part for the nondefective switches.
Current Student
User avatar
Joined: 29 Jan 2005
Posts: 5289
Followers: 17

Kudos [?]: 90 [0], given: 0

GMAT Tests User Reviews Badge
 [#permalink] New post 15 Oct 2005, 23:48
For this problem, I found it easy to pick 100 as the total # switches because we are working with percents. (One useful Kaptrash strategy)

D=defective switches, R=rejected switches

.20*100=20 (D)
.80*16=4 (R)

Since the question doesn`t ask us to solve anything about the Non-Defective switches, we can stop here.

4/100=.04 or 4%

Choose A.
  [#permalink] 15 Oct 2005, 23:48
    Similar topics Author Replies Last post
Similar
Topics:
 New posts One-fifth of the light switches produced by a certain Vicky 6 25 Sep 2003, 05:45
New posts One-fifth of the light switches produced by a certain Dilshod 7 07 May 2006, 10:23
New posts One-fifth of the light switches produced by a certain Vlad77 5 29 Mar 2007, 06:19
Popular new posts One-fifth of the light switches produced by a certain yogachgolf 10 28 Nov 2007, 13:37
New posts One-fifth of the light switches produced by a certain el1981 2 27 Mar 2008, 19:29
Display posts from previous: Sort by

One-fifth of the light switches produced by a cer tain

  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