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:

According to a survey conducted in two cities, A and B, 64% [#permalink]

Show Tags

01 Nov 2012, 22:57

2

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

25% (medium)

Question Stats:

78% (02:49) correct
22% (02:23) wrong based on 98 sessions

HideShow timer Statictics

According to a survey conducted in two cities, A and B, 64% of the population is happy with the new president. If the ratio of the city A population to the city B population is 3:2 and the percentage of city A residents who are happy with the president is 70%, what percentage of city B population is happy with the president?

Re: According to a survey conducted in two cities, A and B, 64% [#permalink]

Show Tags

02 Nov 2012, 01:35

4

This post received KUDOS

actleader wrote:

According to a survey conducted in two cities, A and B, 64% of the population is happy with the new president. If the ratio of the city A population to the city B population is 3:2 and the percentage of city A residents who are happy with the president is 70%, what percentage of city B population is happy with the president?

(A) 30% (B) 50% (C) 25% (D) 55% (E) 62%

This is actually a weighted average question. Remember mixture questions? Simply,

Re: According to a survey conducted in two cities, A and B, 64% [#permalink]

Show Tags

01 Dec 2014, 11:53

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email. _________________

Re: According to a survey conducted in two cities, A and B, 64% [#permalink]

Show Tags

02 Dec 2014, 10:54

actleader wrote:

According to a survey conducted in two cities, A and B, 64% of the population is happy with the new president. If the ratio of the city A population to the city B population is 3:2 and the percentage of city A residents who are happy with the president is 70%, what percentage of city B population is happy with the president?

(A) 30% (B) 50% (C) 25% (D) 55% (E) 62%

another method, by picking smart numbers. let total population =500 (because ratio of population of cities A and B is 3:2) thus city A's population =300, City b's population = 200 also, people who are happy with new president = .64*500 = 320 City A's residents who are happy with the president = .7*300 = 210 thus City B's residents who are happy with the new president = 320-210 =110 thus required percentage =\((\frac{110}{200})*100\) =55%

According to a survey conducted in two cities, A and B, 64% [#permalink]

Show Tags

26 Dec 2014, 10:50

Undoubtedly, weighted average method is the easiest way- one liner (3*70+2*x)/(3+2)=64 x=55(%) Alternatively it can also be done by considering total population of both the cities is 5(3+2), then City A population will be 3 and city B population will be 2 Now,as it is mentioned in the question 64% of the total population is happy and 70% of city A population is happy Assume x% of population in city B is happy So, 70*3+x*2=64*5, this is same as the above expression. _________________

"Arise, Awake and Stop not till the goal is reached"

So, my final tally is in. I applied to three b schools in total this season: INSEAD – admitted MIT Sloan – admitted Wharton – waitlisted and dinged No...

HBS alum talks about effective altruism and founding and ultimately closing MBAs Across America at TED: Casey Gerald speaks at TED2016 – Dream, February 15-19, 2016, Vancouver Convention Center...

By Libby Koerbel Engaging a room of more than 100 people for two straight hours is no easy task, but the Women’s Business Association (WBA), Professor Victoria Medvec...