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 Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

A business school club, Friends of Foam, is throwing a party [#permalink]

Show Tags

11 Jul 2005, 23:21

00:00

A

B

C

D

E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct
0% (00:00) wrong based on 3 sessions

HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A business school club, Friends of Foam, is throwing a party at a local bar. Of the business school students at the bar, 40% are first year students and 60% are second year students. Of the first year students, 40% are drinking beer, 40% are drinking mixed drinks, and 20% are drinking both. Of the second year students, 30% are drinking beer, 30% are drinking mixed drinks, and 20% are drinking both. A business school student is chosen at random. If the student is drinking beer, what is the probability that he or she is also drinking mixed drinks?

Assume there are 100 students total.
40 First years - breaks down to:
16 first year beer drinkers
16 first year mixed drinkers
8 first year both drinkers

60 Second years:
18 beer
18 mixed
12 both
12 drink nothing?

So there are 16+8=24 first year beer/both drinkers and
18+12=30 second year beer/both drinkers
24+30=54 out of 100 people drinking beer.
4/7 gives 57 people - this is the closest answer. I choose 4/7 or none of the above, heh.

If you assume 100 students.
For year 1, you have 16 in B, 16 in M and 8 in the intersection.
For year 2, you have 18 in B, 18 in M and 12 in the intersection.
In total, you have 34 in B, 34 in M and 20 in the intersection.

You are only talking about 48 students !

If I= B intersection M
14 in B-I, 14 in M-I and 20 in I