• Economist Test Prep
    Free Trial & Practice Exam
    BEAT THE GMAT EXCLUSIVE

    Available with Beat the GMAT members only code

    MORE DETAILS
    Economist Test Prep
  • e-gmat Exclusive Offer
    Get 300+ Practice Questions
    25 Video lessons and 6 Webinars for FREE

    Available with Beat the GMAT members only code

    MORE DETAILS
    e-gmat Exclusive Offer
  • Target Test Prep
    5-Day Free Trial
    5-day free, full-access trial TTP Quant

    Available with Beat the GMAT members only code

    MORE DETAILS
    Target Test Prep
  • Varsity Tutors
    Award-winning private GMAT tutoring
    Register now and save up to $200

    Available with Beat the GMAT members only code

    MORE DETAILS
    Varsity Tutors
  • Veritas Prep
    Free Veritas GMAT Class
    Experience Lesson 1 Live Free

    Available with Beat the GMAT members only code

    MORE DETAILS
    Veritas Prep
  • Magoosh
    Magoosh
    Study with Magoosh GMAT prep

    Available with Beat the GMAT members only code

    MORE DETAILS
    Magoosh
  • PrepScholar GMAT
    5 Day FREE Trial
    Study Smarter, Not Harder

    Available with Beat the GMAT members only code

    MORE DETAILS
    PrepScholar GMAT
  • EMPOWERgmat Slider
    1 Hour Free
    BEAT THE GMAT EXCLUSIVE

    Available with Beat the GMAT members only code

    MORE DETAILS
    EMPOWERgmat Slider
  • Kaplan Test Prep
    Free Practice Test & Review
    How would you score if you took the GMAT

    Available with Beat the GMAT members only code

    MORE DETAILS
    Kaplan Test Prep

Official GMATprep trial exam question 3

This topic has 1 expert reply and 1 member reply
Post Mon Oct 30, 2017 8:27 am
Quote:
Are at least 10% of the people in country X who are 65 years old or older employed?

1) In country X, 11.3 percent 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.
Let's use the term seniors, to refer to those who are 65 years old or older.

Target question: Are at least 10 percent of Country X's seniors employed?

Statement 1: In Country X, 11.3 percent of the population is 65 years old or older.
Okay, so we know that a certain percent of the population are seniors, but we aren't told anything about their employment rates.
Since we cannot answer the target question with certainty, statement 1 is NOT SUFFICIENT

Statement 2: Among Country X's seniors, 20 percent of the men and 10 percent of the women are employed
To get a feel for what this tells us, let's examine the two EXTREMES:
Extreme #1 - among the seniors, there are ZERO women. This means all of the seniors are men, which means 20% of the seniors are employed
Extreme #2 - among the seniors, there are ZERO men. This means all of the seniors are women, which means 10% of the seniors are employed
Now that we have examined the extremes, we have a range of values that represent the employment rate among Country X's seniors.
We can conclude: 10% < senior employment rate < 20%
In other words, at least 10 percent of Country X's seniors are employed
Since we can answer the target question with certainty, statement 2 is SUFFICIENT

Answer = B

By the way, this concept (and others) is covered in our video on weighted averages: http://www.gmatprepnow.com/module/gmat-statistics?id=805

Cheers,
Brent

_________________
Brent Hanneson – Founder of GMATPrepNow.com
Use our video course along with Beat The GMAT's free 60-Day Study Guide

Check out the online reviews of our course
Come see all of our free resources

GMAT Prep Now's comprehensive video course can be used in conjunction with Beat The GMAT’s FREE 60-Day Study Guide and reach your target score in 2 months!
gmatevangelist Newbie | Next Rank: 10 Posts Default Avatar
Joined
05 Nov 2017
Posted:
1 messages
Post Thu Nov 09, 2017 3:00 am
This is the question which can be well understood through the concept of weighted average since of the 65 years old or older 20 % women and 10 % men women are employed so their weighted average will always be between 10 & 20 % , hence it can be said yes through second statement . however, first statement does not talk anything further about employed data hence nothing can be concluded through that.


cheers,
Jitendra Agrawal, CFA, FRM
GMAT instructor $$$$ $$$$

GMAT/MBA Expert

Post Thu Nov 09, 2017 5:33 pm
Is it just me, or did the original post go up in smoke? I'm only seeing the replies to this (and a few other questions).

Enroll in a Veritas Prep GMAT class completely for FREE. Wondering if a GMAT course is right for you? Attend the first class session of an actual GMAT course, either in-person or live online, and see for yourself why so many students choose to work with Veritas Prep. Find a class now!

Best Conversation Starters

1 LUANDATO 131 topics
2 lheiannie07 87 topics
3 Roland2rule 79 topics
4 AAPL 75 topics
5 swerve 68 topics
See More Top Beat The GMAT Members...

Most Active Experts

1 image description EconomistGMATTutor

The Economist GMAT Tutor

164 posts
2 image description Jay@ManhattanReview

Manhattan Review

128 posts
3 image description Brent@GMATPrepNow

GMAT Prep Now Teacher

124 posts
4 image description GMATGuruNY

The Princeton Review Teacher

121 posts
5 image description Rich.C@EMPOWERgma...

EMPOWERgmat

120 posts
See More Top Beat The GMAT Experts