Last visit was: 16 Jul 2024, 13:11 It is currently 16 Jul 2024, 13:11
Toolkit
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
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

# Of the members of a certain health club, 30 percent are wome

SORT BY:
Tags:
Show Tags
Hide Tags
Intern
Joined: 27 Jul 2010
Posts: 11
Own Kudos [?]: 31 [13]
Given Kudos: 15
Director
Joined: 02 Sep 2012
Status:Far, far away!
Posts: 856
Own Kudos [?]: 4914 [14]
Given Kudos: 219
Location: Italy
Concentration: Finance, Entrepreneurship
GPA: 3.8
General Discussion
Math Expert
Joined: 02 Sep 2009
Posts: 94370
Own Kudos [?]: 641404 [1]
Given Kudos: 85332
Intern
Joined: 25 Apr 2016
Posts: 27
Own Kudos [?]: 1 [0]
Given Kudos: 359
Concentration: Strategy, General Management
Re: Of the members of a certain health club, 30 percent are wome [#permalink]
Zarrolou wrote:
Of the members of a certain health club, 30 percent are women at least 40 years of age. What percent of the members are men under 40 years of age?
The info of the text is in black.

(1) Of the female members of the health club, half are at least 40 years of age.
The info of statement 1 is in green. Not sufficient as you can see

(2) Of the members of the health club at least 40 years of age, half are men.
The info of statement 2 is in blue/purple. Not sufficient as you can see

1+2)Now we have all the info we need to find the value of "?": $$10%$$

Math Expert
Joined: 02 Sep 2009
Posts: 94370
Own Kudos [?]: 641404 [0]
Given Kudos: 85332
Re: Of the members of a certain health club, 30 percent are wome [#permalink]
ishitam wrote:
Zarrolou wrote:
Of the members of a certain health club, 30 percent are women at least 40 years of age. What percent of the members are men under 40 years of age?
The info of the text is in black.

(1) Of the female members of the health club, half are at least 40 years of age.
The info of statement 1 is in green. Not sufficient as you can see

(2) Of the members of the health club at least 40 years of age, half are men.
The info of statement 2 is in blue/purple. Not sufficient as you can see

1+2)Now we have all the info we need to find the value of "?": $$10%$$

Dear ishitam, in order to get help you should be more specific when asking a question. Thank you.
Intern
Joined: 25 Apr 2016
Posts: 27
Own Kudos [?]: 1 [0]
Given Kudos: 359
Concentration: Strategy, General Management
Re: Of the members of a certain health club, 30 percent are wome [#permalink]
Bunuel wrote:
ishitam wrote:
Zarrolou wrote:
Of the members of a certain health club, 30 percent are women at least 40 years of age. What percent of the members are men under 40 years of age?
The info of the text is in black.

(1) Of the female members of the health club, half are at least 40 years of age.
The info of statement 1 is in green. Not sufficient as you can see

(2) Of the members of the health club at least 40 years of age, half are men.
The info of statement 2 is in blue/purple. Not sufficient as you can see

1+2)Now we have all the info we need to find the value of "?": $$10%$$

Dear ishitam, in order to get help you should be more specific when asking a question. Thank you.

I did not understand the explanation provided in the solution.
So,I was asking the person to elaborate more on this.
The question and the solution provided,both are unclear to me.
Math Expert
Joined: 02 Sep 2009
Posts: 94370
Own Kudos [?]: 641404 [0]
Given Kudos: 85332
Re: Of the members of a certain health club, 30 percent are wome [#permalink]
ishitam wrote:
I did not understand the explanation provided in the solution.
So,I was asking the person to elaborate more on this.
The question and the solution provided,both are unclear to me.

Manager
Joined: 27 Aug 2015
Posts: 72
Own Kudos [?]: 15 [0]
Given Kudos: 80
Re: Of the members of a certain health club, 30 percent are wome [#permalink]
Bunuel wrote:
ishitam wrote:
I did not understand the explanation provided in the solution.
So,I was asking the person to elaborate more on this.
The question and the solution provided,both are unclear to me.

Hi Bunuel, Can you please explain st2. From st2 how can we say that 30% of M are at least 40?
Math Expert
Joined: 02 Sep 2009
Posts: 94370
Own Kudos [?]: 641404 [0]
Given Kudos: 85332
Re: Of the members of a certain health club, 30 percent are wome [#permalink]
rakaisraka wrote:
Bunuel wrote:
ishitam wrote:
I did not understand the explanation provided in the solution.
So,I was asking the person to elaborate more on this.
The question and the solution provided,both are unclear to me.

Hi Bunuel, Can you please explain st2. From st2 how can we say that 30% of M are at least 40?

Assume there are 100 people in total.

From the stem, of these 100 people, 30 people are women 40+.
(2) says of 100 people who are 40+, half are men. Thus another half are women, basically it means that there are equal number of men and women in 40+ group. We know from above that there are 30 women who are 40+. Therefore there must be 30 men who are 40+.

Hope it's clear.

P.S. For better understanding please check similar questions:
are-at-least-10-percent-of-the-people-in-country-x-who-are-122734.html
committee-x-and-committee-y-which-have-no-common-members-96572.html
are-at-least-80-percent-of-the-people-in-country-x-131639.html
Non-Human User
Joined: 09 Sep 2013
Posts: 33994
Own Kudos [?]: 851 [0]
Given Kudos: 0
Re: Of the members of a certain health club, 30 percent are wome [#permalink]
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: Of the members of a certain health club, 30 percent are wome [#permalink]
Moderator:
Math Expert
94370 posts