Is there a generic way to solve these type of questions ?
OA: B
5-Day Free Trial
5-day free, full-access trial TTP
Available with Beat the GMAT members only code
MORE DETAILS
GMAT Prep Question Pack
This topic has expert replies
-
sui generis
- Senior | Next Rank: 100 Posts
- Posts: 89
- Joined: Wed Dec 29, 2010 4:07 am
- Thanked: 1 times
- Followed by:2 members
-
GMATGuruNY
- GMAT Instructor
- Posts: 15539
- Joined: Tue May 25, 2010 12:04 pm
- Location: New York, NY
- Thanked: 13060 times
- Followed by:1906 members
- GMAT Score:790
Use a Venn diagram to represent all of the YES voters:
The TOTAL who voted YES for M = 500.
The number who voted YES for ONLY M = 200.
Thus, the number who voted YES for BOTH M AND R = 300.
Since the TOTAL number who voted YES for R=400, and 300 of these people voted YES for BOTH M AND R, the number who voted YES for ONLY R = 400-300 = 100.
Adding the values in the Venn diagram, we get:
Total number of YES voters = 200+300+100 = 600.
Since the total number of voters = 800, and 600 of these people noted YES for M, R, or both, the number who did NOT vote YES = 800-600 = 200.
The correct answer is B.
The TOTAL who voted YES for M = 500.
The number who voted YES for ONLY M = 200.
Thus, the number who voted YES for BOTH M AND R = 300.
Since the TOTAL number who voted YES for R=400, and 300 of these people voted YES for BOTH M AND R, the number who voted YES for ONLY R = 400-300 = 100.
Adding the values in the Venn diagram, we get:
Total number of YES voters = 200+300+100 = 600.
Since the total number of voters = 800, and 600 of these people noted YES for M, R, or both, the number who did NOT vote YES = 800-600 = 200.
The correct answer is B.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.
As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.
For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.
As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.
For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
-
sui generis
- Senior | Next Rank: 100 Posts
- Posts: 89
- Joined: Wed Dec 29, 2010 4:07 am
- Thanked: 1 times
- Followed by:2 members
Thanks Mitch. You really made it look easier.
Actually I would like to share the GMAT Prep's approach and ask whether there could be way to make a ven-diagram out of it. As the method they have used is long but generic.
Actually I would like to share the GMAT Prep's approach and ask whether there could be way to make a ven-diagram out of it. As the method they have used is long but generic.
- Attachments
-
