Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
61% (02:23) correct
39%
(02:25)
wrong
based on 741
sessions
History
Date
Time
Result
Not Attempted Yet
In a certain large company, the ratio of college graduates with a graduate degree to non-college graduates is 1:8, and ratio of college graduates without a graduate degree to non-college graduates is 2:3. If one picks a random college graduate at this large company, what is the probability this college graduate has a graduate degree?
A) 1/11
B) 1/12
C) 1/13
D) 3/19
E) 3/43
A) 1/11
B) 1/12
C) 1/13
D) 3/19
E) 3/43
27 Sep 2015, 13:19
Kudos
Bookmarks
Bunuel
It took me a while to see there are, indeed, 3 types of worker.
Let A = # of college graduates with a graduate degree
Let B = # of non-college graduates
Let C = # of college graduates without a graduate degree
Given: A : B = 1 : 8
Given: C : B = 2 : 3
Since both ratios share B, we need to create equivalent fractions that have the same value for B.
A : B = 1 : 8 = 3 : 24
C : B = 2 : 3 = 16 : 24
So, A : B : C = 3 : 24 : 16
3 + 24 + 16 = 43
So, for every 43 workers, there are:
- 3 college graduates with a graduate degree
- 24 non-college graduates
- 16 of college graduates without a graduate degree
If one picks a random college graduate at this large company, what is the probability this college graduate has a graduate degree?
We are picking a college graduate.
From the above info, we ignore the number of non-college graduates.
So, for every 19 college graduates, 3 have a graduate degree and 16 do not.
P(this college graduate has a graduate degree) = 3/19
Answer: D
Cheers,
Brent
General Discussion
27 Sep 2015, 13:51
Kudos
Bookmarks
Bunuel
Let A be the number of college graduates with degree, B be the number of college graduates without a degree and C be the number of non-college graduates.
It is given that A:C is 1:8 or 3:24 and B:C is 2:3 or 16:24.
Then by scaling, we have A:B:C =3:16:24
Total number of college graduates is A+B = 3+16=19
Probability of choosing a college graduate with degree will be
\(\frac{A}{A+B}=\frac{3}{19}\)
Answer:- D
