It is currently 12 Dec 2018, 09:20

### 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

# If one of the workers in the manufacturing and service indus

Author Message
TAGS:
Moderator
Joined: 18 Apr 2015
Posts: 5150
Followers: 77

Kudos [?]: 1030 [0], given: 4640

If one of the workers in the manufacturing and service indus [#permalink]  24 Jan 2016, 14:19
Expert's post
00:00

Question Stats:

100% (01:37) correct 0% (00:00) wrong based on 5 sessions

If one of the workers in the manufacturing and service industries who were unemployed for at least 1 week will be randomly selected, what is the probability that the person selected will be a service industry worker who was unemployed for 26 weeks or more?

A 0.04
 B 0.09
 C 0.21
 D 0.40
 E 0.90

Practice Questions
Question: 19
Page: 462
Difficulty: medium

_________________
Moderator
Joined: 18 Apr 2015
Posts: 5150
Followers: 77

Kudos [?]: 1030 [0], given: 4640

Re: If one of the workers in the manufacturing and service indus [#permalink]  24 Jan 2016, 14:23
Expert's post
Solution

$$\frac{the number of service industry workers who were unemployed 26 weeks or more}{the number of workers in the two industries who were unemployed at least 1 week}$$

The number of workers in the two industries who were unemployed for at least 1 week is the sum of the total numbers of workers represented by the two graphs, or 10 million+8 million=18 million.
According to the graph for the service industry, the number of workers who were unemployed for 26 weeks or more is 9% of 8 million, or 0.72 million.

The desired probability is $$\frac{0.72 million}{18million}=0.04$$

The answer is $$A$$
_________________
Display posts from previous: Sort by