Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 05 Jul 2015, 19:03

### 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

# Three units of A, B, C of a factory produce 25%, 25% and

Author Message
TAGS:
Senior Manager
Joined: 02 Mar 2004
Posts: 328
Location: There
Followers: 1

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

Three units of A, B, C of a factory produce 25%, 25% and [#permalink]  15 May 2004, 22:27
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Three units of A, B, C of a factory produce 25%, 25% and 50"% of its production respectively. If the percentages of defective items produced by the three units A, B, C are respectively 1%, 2% and 3% and an item selected at random is found to be defective, find the probability that it is produced by the unit (i) A; (ii) B
SVP
Joined: 30 Oct 2003
Posts: 1794
Location: NewJersey USA
Followers: 5

Kudos [?]: 43 [0], given: 0

A produces 25 items
B produces 25
C preoduces 50 items

No of deffective by A = 0.25
No of deffective by B = 0.5
No of deffective by C = 1.5

P(deffective is from A ) = 0.25 / ( 0.25+0.5+1.5 ) = 1/9
p(deffective is from B ) = 0.5 / ( 0.25+0.5+1.5) = 2/9
Similar topics Replies Last post
Similar
Topics:
2 Consider three concentric circles A,B and C of radii 3,5 and 10 units 2 04 Sep 2014, 22:20
If c is 25% of a and 10% of b, what percent of a is b? 3 30 Oct 2012, 22:07
The square of 5^sqrt(2) = ? a) 5^2 b) 25^sqrt(2) c) 25 6 17 Jul 2007, 14:37
If 400,000 = 4^(n+1) * 25^n , then n = a) 1.5 b) 2 c) 6 15 Oct 2006, 05:01
In a group of 25 factory workers, 15 have brown eyes. Six of 5 03 Apr 2006, 21:05
Display posts from previous: Sort by