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Fast-food restaurants make up 45 percent of all restaurants in Cantari 13 Jun 2021, 10:31
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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.

The answer is D but if the average age is increasing and the population is also increasing, does that not mean that more older people are increasing? Average is the (Sum of the age of all the people/Total Population).
So, if the overall Average is increasing then the numerator is increasing at a higher rate than the denominator so we are adding more older people and hence how does the explanation say that more population can mean that we are adding more younger or more older people.
Please clarify.

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Fast-food restaurants make up 45 percent of all restaurants in Cantari 13 Jun 2021, 11:12
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deepanjan0612
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.

The answer is D but if the average age is increasing and the population is also increasing, does that not mean that more older people are increasing? Average is the (Sum of the age of all the people/Total Population).
So, if the overall Average is increasing then the numerator is increasing at a higher rate than the denominator so we are adding more older people and hence how does the explanation say that more population can mean that we are adding more younger or more older people.
Please clarify.
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This question is discussed in detail here: fast-food-restaurants-make-up-45-percent-of-all-restaurants-in-cantari-220525.html In case of any questions please post there. Hope it helps.

Also, please read carefully and follow: rules-to-post-on-the-verbal-forum-208733.html Thank you.


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Fast-food restaurants make up 45 percent of all restaurants in Cantari 11 Jan 2025, 20:54
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