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:

Are at least 10 percent of the people in Country X who are [#permalink]

Show Tags

22 Jan 2009, 10:22

3

This post received KUDOS

15

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

65% (hard)

Question Stats:

54% (01:55) correct
46% (01:05) wrong based on 493 sessions

HideShow timer Statistics

Are at least 10 percent of the people in Country X who are 65 years old or older employed?

(1) In Country X, 11.3% of the population is 65 years old or older (2) In Country X, of the population 65 years old or older, 20 percent of the men and 10 percent of the women are employed.

Are at least 10 percent of the people in Country X who are 65 years old or older employed?

1. In Country X, 11.3% of the population is 65 years old or older 2. In Country X, of the population 65 years old or older, 20 percent of the men and 10 percent of the women are employed.

Clearly statement 1 is not suffcieint

statmnt 2:

10% W and 20% M. Even we don't the no of Men and Women it is clear that employment must be between 10 and 20 Sufficient. B. _________________

Your attitude determines your altitude Smiling wins more friends than frowning

Are at least 10 percent of the people in Country X who are 65 years old or older employed?

1. In Country X, 11.3% of the population is 65 years old or older 2. In Country X, of the population 65 years old or older, 20 percent of the men and 10 percent of the women are employed.

Clearly statement 1 is not suffcieint

statmnt 2:

10% W and 20% M. Even we don't the no of Men and Women it is clear that employment must be between 10 and 20 Sufficient. B.

can u explain how the employment will be between 10 and 20 percent

Are at least 10 percent of the people in Country X who are 65 years old or older employed?

1. In Country X, 11.3% of the population is 65 years old or older 2. In Country X, of the population 65 years old or older, 20 percent of the men and 10 percent of the women are employed.

Clearly statement 1 is not suffcieint

statmnt 2:

10% W and 20% M. Even we don't the no of Men and Women it is clear that employment must be between 10 and 20 Sufficient. B.

can u explain how the employment will be between 10 and 20 percent

its not employment of total country people.. its employment of people who are 65 years old or older is between 10 and 20

Question:Are at least 10 percent of the people in Country X who are 65 years old or older employed? rewrite the question

Is employment atleast 10 percent of people who are 65 year old or older?

From 65+ group 10% W employed and 20% M employed. W = no of women M = no of men

employment(65+group) = 10*W/(M+W) + 20*M/(M+W) = weighted averge. If all are women . M=0 and employment =10 (Minimum value) if all are men W=0 and employment = 20 For any other ratio. it should be between 10 and 20. So employment is alwasy >=10 _________________

Your attitude determines your altitude Smiling wins more friends than frowning

Are at least 10 percent of the people in Country X who are 65 years old or older employed?

1. In Country X, 11.3% of the population is 65 years old or older 2. In Country X, of the population 65 years old or older, 20 percent of the men and 10 percent of the women are employed.

x2suresh, i couldn't really understand your logic.

St B: If country X has 200 people. 65+ are 20 of the 200 people. Of the 20 , 10 are male and 10 female. Then the number employed will be 20% of 10 and 10% of 10 which is equal to 3. 3 is not anywhere close to 10% of 200.

On the other hand If country X has 200 people. 65+ are 150 of the 200 people. Of the 150 , 100 are male and 50 female. Then the number employed will be 20% of 100 and 10% of 50 which is equal to 25, which is over 10% of 200.

Are at least 10 percent of the people in Country X who are 65 years old or older employed?

1. In Country X, 11.3% of the population is 65 years old or older 2. In Country X, of the population 65 years old or older, 20 percent of the men and 10 percent of the women are employed.

x2suresh, i couldn't really understand your logic.

St B: If country X has 200 people. 65+ are 20 of the 200 people. Of the 20 , 10 are male and 10 female. Then the number employed will be 20% of 10 and 10% of 10 which is equal to 3. 3 is not anywhere close to 10% of 200.

On the other hand If country X has 200 people. 65+ are 150 of the 200 people. Of the 150 , 100 are male and 50 female. Then the number employed will be 20% of 100 and 10% of 50 which is equal to 25, which is over 10% of 200.

I agree that quesiton is poorly worded.

Are at least 10 percent of the people in Country X who are 65 years old or older employed?

are atleast 10% of people who are 65+ .. are employed ?

From your example are atleast 10% of 20(people who are 65+) are employed? 3 people are employer.. 3/20*100=15% >10%

I hope you got it.

What is the source of this question. _________________

Your attitude determines your altitude Smiling wins more friends than frowning

B shld be the ans The main point in this question is that it asks the percentage of 65+ age grp who are employed. So we need not know the total no of ppl . statement 1 is insufficient.Its not telling anything abt employement. so A and D are out St 2: suppose 65+ age grp ppl are 100 in no. Then out of these 20 men and 10 women are employed. That means employed %age ppl in this category is 30%. Hence suff

study wrote:

Are at least 10 percent of the people in Country X who are 65 years old or older employed?

1. In Country X, 11.3% of the population is 65 years old or older 2. In Country X, of the population 65 years old or older, 20 percent of the men and 10 percent of the women are employed.

B shld be the ans The main point in this question is that it asks the percentage of 65+ age grp who are employed. So we need not know the total no of ppl . statement 1 is insufficient.Its not telling anything abt employement. so A and D are out St 2: suppose 65+ age grp ppl are 100 in no. Then out of these 20 men and 10 women are employed. That means employed %age ppl in this category is 30%. Hence suff

study wrote:

Are at least 10 percent of the people in Country X who are 65 years old or older employed?

1. In Country X, 11.3% of the population is 65 years old or older 2. In Country X, of the population 65 years old or older, 20 percent of the men and 10 percent of the women are employed.

B is indeed the answer. However, it is important to point out that we do not know the ratio of Men/Women above age 65. For example, if 65+ group have 100 ppl and all are women, we would only have 10 employed. Since the question asked at least 10, it is sufficient. I would just like to point out that people need to consider the absolute "minimum" since we are not given men/women ratio of the group.

Another point is that, you cannot simply added 10% and 20% to get the total employed to be 30%. The total have to be between 10% and 20%....

I am not sure if this is reading too much into the question

B shld be the ans The main point in this question is that it asks the percentage of 65+ age grp who are employed. So we need not know the total no of ppl . statement 1 is insufficient.Its not telling anything abt employement. so A and D are out St 2: suppose 65+ age grp ppl are 100 in no. Then out of these 20 men and 10 women are employed. That means employed %age ppl in this category is 30%. Hence suff

The red part is not correct. Men + Women = 100, you can say 20% of men is 20 just in case women = 0. Similarly, Women = 10 only when Men=0. So employ 65+ cann't be 10+20=30. Instead, it is between 10-20. _________________

Discussions are always the main source of accurate information and to ensure a comfortable results, you can get immediate and reliable information, which will definitely help you in every area of your concern. _________________

Are at least 10 percent of the people in Country X who are 65 years old or older employed?

(1) In Country X, 11.3% of the population is 65 years old or older (2) In Country X, of the population 65 years old or older, 20 percent of the men and 10 percent of the women are employed.

Question: is at least 10% of some particular group of people employed?

(1) This particular group composes 11.3% of total population. Clearly insufficient, as no info about employment rates in this group.

(2) 10% of men in this group and 20% of women in this group are employed. No matter how many men and women are in this group, more than 10% will be employed. This is because the weighted average of 2 individual averages (10% and 20%) must lie between these individual averages, so percent of employed people in this group is between 10% and 20%. Sufficient.

Re: Are at least 10 percent of the people in Country X who are [#permalink]

Show Tags

18 Apr 2012, 19:01

Wow... the wording on this question is very tough. For the longest time i thought it was asking for 10% of the entire population. Thanks for the clarification. _________________

Re: Are at least 10 percent of the people in Country X who are [#permalink]

Show Tags

30 May 2012, 09:14

Statement 1: Insufficient, there is no info on employed and the question asks about the employed.

Statement 2: If it's intuitively not clear, draw a tree diagram. from x emerges two branches: 65 years or older people and less than 65. we are not concerned about the second branch. of the first branch of 65 years or older, they can be either men or women. from men, we can draw two branches, one for the employed, one for unemployed. we do the same for the women. we are told that the employed category % for men is 20%, for women 10%. at this point, forget everything and think: if of all the grandmas, 10% are employed and of all the grandpas 20% are employed, then at least 10% of these grandparents are employed. It should make sense for at least two reasons: 1. there is no "third" sex as far as i know. 2. Uncle Sam's social security system is bankrupt making retirement a dream for many.

Re: Are at least 10 percent of the people in Country X who are [#permalink]

Show Tags

02 Jul 2012, 17:37

I set out the equation ...(10%*F + 20%*M)/ (F + M) ? >= 10%, where F and M represent the number of females and males in the older than or equal to 65 group. I then subbed in the lowest numbers 1 and 1 for both female and male (potentially you can also use 0), and the result was 15%. Since this is greater than 10%, statement B is sufficient.

Re: Are at least 10 percent of the people in Country X who are [#permalink]

Show Tags

24 Jul 2013, 00:47

The person has tagged this question as overlapping sets. I seem to face the same problem How can you tell the difference between an overlapping set and weighted average problem? They seem to be worded very similarly.

Statement 2 equation is

\(\frac{10% F + 20% M}{F + M}> = \frac{10}{100}\) _________________

Click +1 Kudos if my post helped...

Amazing Free video explanation for all Quant questions from OG 13 and much more http://www.gmatquantum.com/og13th/

GMAT Prep software What if scenarios http://gmatclub.com/forum/gmat-prep-software-analysis-and-what-if-scenarios-146146.html

Re: Are at least 10 percent of the people in Country X who are [#permalink]

Show Tags

23 Aug 2014, 12:31

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: Are at least 10 percent of the people in Country X who are [#permalink]

Show Tags

30 Aug 2014, 11:53

Bunuel wrote:

study wrote:

Are at least 10 percent of the people in Country X who are 65 years old or older employed?

(1) In Country X, 11.3% of the population is 65 years old or older (2) In Country X, of the population 65 years old or older, 20 percent of the men and 10 percent of the women are employed.

Question: is at least 10% of some particular group of people employed?

(1) This particular group composes 11.3% of total population. Clearly insufficient, as no info about employment rates in this group.

(2) 10% of men in this group and 20% of women in this group are employed. No matter how many men and women are in this group, more than 10% will be employed. This is because the weighted average of 2 individual averages (10% and 20%) must lie between these individual averages, so percent of employed people in this group is between 10% and 20%. Sufficient.

Answer: B.

Hi Bunuel,

Question regarding your explanation of Stm2.

It says that 10% of m over 65 and 20 % of w over 65 are employed. How does this translate into 10% of over 65 being employed? If it's a weighted average problem, then don't we need to know the number of m/f over 65 to prove sufficiency?

Re: Are at least 10 percent of the people in Country X who are [#permalink]

Show Tags

01 Sep 2014, 00:53

Expert's post

russ9 wrote:

Bunuel wrote:

study wrote:

Are at least 10 percent of the people in Country X who are 65 years old or older employed?

(1) In Country X, 11.3% of the population is 65 years old or older (2) In Country X, of the population 65 years old or older, 20 percent of the men and 10 percent of the women are employed.

Question: is at least 10% of some particular group of people employed?

(1) This particular group composes 11.3% of total population. Clearly insufficient, as no info about employment rates in this group.

(2) 10% of men in this group and 20% of women in this group are employed. No matter how many men and women are in this group, more than 10% will be employed. This is because the weighted average of 2 individual averages (10% and 20%) must lie between these individual averages, so percent of employed people in this group is between 10% and 20%. Sufficient.

Answer: B.

Hi Bunuel,

Question regarding your explanation of Stm2.

It says that 10% of m over 65 and 20 % of w over 65 are employed. How does this translate into 10% of over 65 being employed? If it's a weighted average problem, then don't we need to know the number of m/f over 65 to prove sufficiency?

Let me ask you a question: the average height of girls in a class is 1.5 meters and the average height of boys in the class is 1.6 meters. Can the average height of all students there be less than 1.5 meters or more than 1.6 meters? _________________

Excellent posts dLo saw your blog too..!! Man .. you have got some writing skills. And Just to make an argument = You had such an amazing resume ; i am glad...

So Much $$$ Business school costs a lot. This is obvious, whether you are a full-ride scholarship student or are paying fully out-of-pocket. Aside from the (constantly rising)...

They say you get better at doing something by doing it. then doing it again ... and again ... and again, and you keep doing it until one day you look...