• Magoosh
    Magoosh
    Study with Magoosh GMAT prep

    Available with Beat the GMAT members only code

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

    Available with Beat the GMAT members only code

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

    Available with Beat the GMAT members only code

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

    Available with Beat the GMAT members only code

    MORE DETAILS
    EMPOWERgmat Slider

OG CR:Fast-food restaurants make up

This topic has 2 expert replies and 2 member replies

Top Member

OG CR:Fast-food restaurants make up

Post Sat Sep 17, 2016 9:27 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    Fast-food restaurants make up 45 percent of all restaurants in Cantaria. Customers at these restaurants tend to be young; in fact, studies have shown that the older people get, the less likely they are to eat in fast-food restaurants. Since the average age of the Canatrian population is gradually rising and will continue to do so, the number of fast-food restaurants is likely to decrease.

    Which of the following, if true, most seriously weakens the argument?

    A) Fast-food restaurants in Canatria are getting bigger, so each one can serve more customers.
    B) Some older people eat at fast-food restaurants more frequently than the average young person.
    C) Many people who rarely eat in fast-food restaurants nevertheless eat regularly in restaurants.
    D) The overall population of Canatria is growing steadily.
    E) As the population of Canatria gets older, more people are eating at home.

    OA:D

    Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!
    Post Mon Sep 19, 2016 6:04 pm
    NandishSS wrote:
    Fast-food restaurants make up 45 percent of all restaurants in Cantaria. Customers at these restaurants tend to be young; in fact, studies have shown that the older people get, the less likely they are to eat in fast-food restaurants. Since the average age of the Canatrian population is gradually rising and will continue to do so, the number of fast-food restaurants is likely to decrease.

    Which of the following, if true, most seriously weakens the argument?

    A) Fast-food restaurants in Canatria are getting bigger, so each one can serve more customers.
    B) Some older people eat at fast-food restaurants more frequently than the average young person.
    C) Many people who rarely eat in fast-food restaurants nevertheless eat regularly in restaurants.
    D) The overall population of Canatria is growing steadily.
    E) As the population of Canatria gets older, more people are eating at home.

    OA:D
    Premise: The average age of the Canatrian population is gradually rising, and studies have shown that the older people get, the less likely they are to eat in fast-food restaurant.
    Conclusion: The number of fast-food restaurants is likely to decrease.

    One assumption is that AVERAGE = NUMBER.

    Answer choice D: The overall population of Canatria is growing steadily.
    Consider the following case:
    Now: 60 20-year old citizens and 40 50-year old citizens, total population = 100, average age = (60*20 + 40*50)/100 = 32.
    Five years from now: 400 20-year old citizens and 600 50-year old citizens, total population = 1000, average age = (400*20 + 600*50)/1000 = 38.
    Here, the average age increases from 32 to 38, but the number of young people INCREASES from 60 to 400, WEAKENING the conclusion that the number of fast food restaurants catering to young people will decrease.

    The correct answer is D.

    _________________
    Mitch Hunt
    GMAT Private Tutor
    GMATGuruNY@gmail.com
    If you find one of my posts helpful, please take a moment to click on the "Thank" icon.
    Available for tutoring in NYC and long-distance.
    For more information, please email me at GMATGuruNY@gmail.com.

    Free GMAT Practice Test How can you improve your test score if you don't know your baseline score? Take a free online practice exam. Get started on achieving your dream score today! Sign up now.
    ritzzzr Senior | Next Rank: 100 Posts Default Avatar
    Joined
    10 Oct 2011
    Posted:
    37 messages
    Thanked:
    2 times
    Post Tue Sep 20, 2016 1:52 am
    GMATGuruNY wrote:
    NandishSS wrote:
    Fast-food restaurants make up 45 percent of all restaurants in Cantaria. Customers at these restaurants tend to be young; in fact, studies have shown that the older people get, the less likely they are to eat in fast-food restaurants. Since the average age of the Canatrian population is gradually rising and will continue to do so, the number of fast-food restaurants is likely to decrease.

    Which of the following, if true, most seriously weakens the argument?

    A) Fast-food restaurants in Canatria are getting bigger, so each one can serve more customers.
    B) Some older people eat at fast-food restaurants more frequently than the average young person.
    C) Many people who rarely eat in fast-food restaurants nevertheless eat regularly in restaurants.
    D) The overall population of Canatria is growing steadily.
    E) As the population of Canatria gets older, more people are eating at home.

    OA:D
    Premise: The average age of the Canatrian population is gradually rising, and studies have shown that the older people get, the less likely they are to eat in fast-food restaurant.
    Conclusion: The number of fast-food restaurants is likely to decrease.

    One assumption is that AVERAGE = NUMBER.

    Answer choice D: The overall population of Canatria is growing steadily.
    Consider the following case:
    Now: 60 20-year old citizens and 40 50-year old citizens, total population = 100, average age = (60*20 + 40*50)/100 = 32.
    Five years from now: 400 20-year old citizens and 600 50-year old citizens, total population = 1000, average age = (400*20 + 600*50)/1000 = 38.
    Here, the average age increases from 32 to 38, but the number of young people INCREASES from 60 to 400, WEAKENING the conclusion that the number of fast food restaurants catering to young people will decrease.

    The correct answer is D.
    Hi ,
    Its a bit unclear to me can you explain it a bit more?

    MBA Challengers Senior | Next Rank: 100 Posts
    Joined
    09 Sep 2016
    Posted:
    51 messages
    Thanked:
    20 times
    Post Tue Sep 20, 2016 4:11 am
    Let's start with listing all premises:

    1. FF restaurants - 45% of restaurants in Cantaria
    2. The older people get, lesser likely they are to eat in FF restaurants
    3. Younger people eat at FF restaurants
    4. Avg age of Cantarian population is rising and continuing trend

    Conclusion - Number of fast food restaurants will decrease
    Assumption - 1. Number of customers interested in eating at a FF restaurant will reduce
    2. Number of younger people in Cantaria will reduce

    Now going through the options:
    A. This only strengthens the conclusion because if they are able to cater to more people, more cost but the pool of people might fall.
    B. This is not directly tackling the problem of lesser people to eat at restaurants. Some exceptions will not reverse a possible trend.
    C. The conclusion clearly mentions decrease in number of FF restaurants. Doesn't count.
    D. Consider this: If the overall population increases, even if the average age is higher, the proportion of younger people might fall but the absolute number is likely to increase. So, in country Hakuna Matata, if there were earlier 100 people with average age 45, even if the average age increases to 55 but the overall population increases to 1000 the number of younger people would have increased. So, this is a possible situation which weakens the author's argument.
    E. This only further strengthens the argument.

    So, the answer should be D

    _________________
    Log on to www.mbachallengers.com for
    Easy strategic GMAT prep
    For any queries mail us at mba.challengers@outlook.com
    Follow MBA Challengers on Facebook

    Post Tue Sep 20, 2016 6:59 am
    ritzzzr wrote:
    GMATGuruNY wrote:
    NandishSS wrote:
    Fast-food restaurants make up 45 percent of all restaurants in Cantaria. Customers at these restaurants tend to be young; in fact, studies have shown that the older people get, the less likely they are to eat in fast-food restaurants. Since the average age of the Canatrian population is gradually rising and will continue to do so, the number of fast-food restaurants is likely to decrease.

    Which of the following, if true, most seriously weakens the argument?

    A) Fast-food restaurants in Canatria are getting bigger, so each one can serve more customers.
    B) Some older people eat at fast-food restaurants more frequently than the average young person.
    C) Many people who rarely eat in fast-food restaurants nevertheless eat regularly in restaurants.
    D) The overall population of Canatria is growing steadily.
    E) As the population of Canatria gets older, more people are eating at home.

    OA:D
    Premise: The average age of the Canatrian population is gradually rising, and studies have shown that the older people get, the less likely they are to eat in fast-food restaurant.
    Conclusion: The number of fast-food restaurants is likely to decrease.

    One assumption is that AVERAGE = NUMBER.

    Answer choice D: The overall population of Canatria is growing steadily.
    Consider the following case:
    Now: 60 20-year old citizens and 40 50-year old citizens, total population = 100, average age = (60*20 + 40*50)/100 = 32.
    Five years from now: 400 20-year old citizens and 600 50-year old citizens, total population = 1000, average age = (400*20 + 600*50)/1000 = 38.

    Here, the average age increases from 32 to 38, but the number of young people INCREASES from 60 to 400, WEAKENING the conclusion that the number of fast food restaurants catering to young people will decrease.

    The correct answer is D.
    Hi ,
    Its a bit unclear to me can you explain it a bit more?
    The argument assumes that an increase in the average age will lead to a decrease in the number of young people frequenting fast-food restaurants.

    In the case in blue:
    The total population increases from 100 to 1000.
    The average age increases from 32 to 38.
    The total number of young people increases from 60 to 400.

    This case illustrates that an increase in the total population can yield both an increase in the average age AND an increase in the total number of young people.
    Thus, the OA attacks the assumption that an increase in the average age will lead to a decrease in the number of young people frequenting fast-food restaurants, thereby weakening the conclusion that the number of fast-food restaurants is likely to decline.

    _________________
    Mitch Hunt
    GMAT Private Tutor
    GMATGuruNY@gmail.com
    If you find one of my posts helpful, please take a moment to click on the "Thank" icon.
    Available for tutoring in NYC and long-distance.
    For more information, please email me at GMATGuruNY@gmail.com.

    Free GMAT Practice Test How can you improve your test score if you don't know your baseline score? Take a free online practice exam. Get started on achieving your dream score today! Sign up now.

    Best Conversation Starters

    1 Vincen 152 topics
    2 lheiannie07 61 topics
    3 Roland2rule 49 topics
    4 LUANDATO 44 topics
    5 ardz24 40 topics
    See More Top Beat The GMAT Members...

    Most Active Experts

    1 image description Brent@GMATPrepNow

    GMAT Prep Now Teacher

    140 posts
    2 image description Rich.C@EMPOWERgma...

    EMPOWERgmat

    110 posts
    3 image description EconomistGMATTutor

    The Economist GMAT Tutor

    109 posts
    4 image description GMATGuruNY

    The Princeton Review Teacher

    107 posts
    5 image description DavidG@VeritasPrep

    Veritas Prep

    72 posts
    See More Top Beat The GMAT Experts