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# 30 years ago residents of Pandora County used to buy an average of 10

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Joined: 01 Sep 2010
Posts: 3417
30 years ago residents of Pandora County used to buy an average of 10  [#permalink]

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02 Oct 2018, 13:16
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Difficulty:

25% (medium)

Question Stats:

73% (01:08) correct 27% (01:40) wrong based on 180 sessions

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30 years ago residents of Pandora County used to buy an average of 10 books every year. Today, the residents of Pandora County buy an average of three books every year. Therefore, it can be concluded that book sales in Pandora County must have fallen over these 30 years.

The argument above rests on which of the following assumptions?

(A) The residents of Pandora County used to have more free time 30 years ago than they do now.
(B) The residents of Pandora County have many more activities that vie for their attention today than 30 years back.
(C) The population of Pandora County hasn’t increased significantly in the last 30 years.
(D) The literacy rate hasn’t significantly changed in Pandora County over the past 30 years.
(E) Those residents of Pandora County who used to read 30 years ago have now not become too old to read.

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Re: 30 years ago residents of Pandora County used to buy an average of 10  [#permalink]

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02 Oct 2018, 14:17
The argument says that the average number of books per person has reduced from 30 years ago when a resident used to buy an average of 10 books a year to today when a resident only buys 3 books a year. The argument goes on to conclude based on this info that the total book sales in the county have fallen over 30 years.

To find the assumption we must find a link that connects the blue elements highlighted in the argument above. Let us look at the options.

(A) The residents of Pandora County used to have more free time 30 years ago than they do now. WRONG - Out of scope - whether reading is done in free time or as a job it does not affect selling of books!
(B) The residents of Pandora County have many more activities that vie for their attention today than 30 years back. WRONG - Out of scope.
(C) The population of Pandora County hasn’t increased significantly in the last 30 years. CORRECT! If the population is 5 times as much as it was 30 years back - 10 books per person then was fewer books than 3 books per person now.
(D) The literacy rate hasn’t significantly changed in Pandora County over the past 30 years. WRONG - Out of scope!
(E) Those residents of Pandora County who used to read 30 years ago have now not become too old to read. WRONG - Out of scope

Hence Option (C) is our choice.

Best,
G

carcass wrote:
30 years ago residents of Pandora County used to buy an average of 10 books every year. Today, the residents of Pandora County buy an average of three books every year. Therefore, it can be concluded that book sales in Pandora County must have fallen over these 30 years.

The argument above rests on which of the following assumptions?

(A) The residents of Pandora County used to have more free time 30 years ago than they do now.
(B) The residents of Pandora County have many more activities that vie for their attention today than 30 years back.
(C) The population of Pandora County hasn’t increased significantly in the last 30 years.
(D) The literacy rate hasn’t significantly changed in Pandora County over the past 30 years.
(E) Those residents of Pandora County who used to read 30 years ago have now not become too old to read.

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Re: 30 years ago residents of Pandora County used to buy an average of 10  [#permalink]

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02 Oct 2018, 14:50
This argument is rests on population of the county, because if the population increased in the last 30 years then you cannot say sales has been decreased significantly. Here in this argument Increase or decrease of sales is depend on the population. If the population increased significantly then the sale of 3 books a year can be increase in sales compared to books people used to buy 30 years ago.
So, correct answer choice is C.
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Tashin
Re: 30 years ago residents of Pandora County used to buy an average of 10   [#permalink] 02 Oct 2018, 14:50
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