Last visit was: 15 Jul 2024, 01:21 It is currently 15 Jul 2024, 01:21
Toolkit
GMAT Club Daily Prep
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

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.

# Five thousand of the 50,000 books published in country Z in 1991 were

SORT BY:
Tags:
Show Tags
Hide Tags
Math Expert
Joined: 02 Sep 2009
Posts: 94342
Own Kudos [?]: 640903 [5]
Given Kudos: 85011
SVP
Joined: 24 Nov 2016
Posts: 1712
Own Kudos [?]: 1360 [3]
Given Kudos: 607
Location: United States
Senior Manager
Joined: 14 Jul 2019
Status:Student
Posts: 475
Own Kudos [?]: 372 [2]
Given Kudos: 52
Location: United States
Concentration: Accounting, Finance
GMAT 1: 650 Q45 V35
GPA: 3.9
WE:Education (Accounting)
Senior Manager
Joined: 17 Mar 2019
Posts: 364
Own Kudos [?]: 284 [1]
Given Kudos: 35
Location: India
Concentration: Healthcare, General Management
Schools:
GPA: 3.75
WE:Pharmaceuticals (Health Care)
Re: Five thousand of the 50,000 books published in country Z in 1991 were [#permalink]
1
Kudos
Five thousand of the 50,000 books published in country Z in 1991 were novels. Exactly 25 of the films released in country Z in 1992 were based on those novels. Since 100 films were released in country Z in 1992, no more than one-quarter of them were based on books published in country Z in 1991.

Stimulus: The author states that 5000/50,000 books published in country Z in 1991 were novels and 25 films released in 1992 were based on novels. Since 100 films were released in country Z no more than quarter of them were based on books published in country Z in 1991.

The author assumes that the only book the filmmakers used to make movies are from novels.

IMO B

Which one of the following, if assumed, allows the conclusion above to be properly drawn?

(A) None of the scripts used in films released in 1992 were written by professional novelists.

(B) None of the films released in country Z in 1992 were based on books other than novels.

(C) None of the books that were published in country Z in 1992 were based on plots of films released in 1991.

(D) Some of the films released in country Z in 1992 were based on older films that had been released for the first time many years earlier.

(E) Some of the films released in 1991 in country Z were based on novels that were published in 1991.
Current Student
Joined: 07 Jul 2019
Posts: 35
Own Kudos [?]: 20 [1]
Given Kudos: 105
Location: India
Concentration: Strategy, Technology
GMAT 1: 710 Q50 V35
GPA: 4
WE:Analyst (Computer Software)
Re: Five thousand of the 50,000 books published in country Z in 1991 were [#permalink]
1
Kudos
I will go with option (B).

This can be solved with the help of venn-diagram trick (just one of the way).

Argument says there were 25 films out of 100 total films produced in 1992 which were based on novels of 1991 ( Not on the total books of 1991). Thus, there is possibility that some of the other 75 films were based on non-novel books of 1991.

To hold the conclusion "no more than one-quarter of them were based on books published in country Z in 1991." to be true- it is necessary that we assume the other 75 films to not to be based on any book from 1991.

Hence, (B) is a correct choice.

BR
Director
Joined: 22 Feb 2018
Posts: 784
Own Kudos [?]: 1059 [0]
Given Kudos: 135
Re: Five thousand of the 50,000 books published in country Z in 1991 were [#permalink]
GMATNinja, ChiranjeevSingh, @KarishmaB,@MartyTargetTestPrep, AjiteshArun, Bunuel

Usually, the assumption is an information that is not the restatement of the premise statements. Is not the information in correct option, i.e. (B) None of the films released in country Z in 1992 were based on books other than novels be the restatement of the premise - Exactly 25 of the films released in country Z in 1992 were based on those novels.

Both indicates the same meaning that films released in country Z in 1992 were based on Novel only (as Exactly word indicates in premise).
Can anyone please shed some lights on above query.

GMAT Club Legend
Joined: 15 Jul 2015
Posts: 5311
Own Kudos [?]: 4731 [1]
Given Kudos: 659
Location: India
GMAT Focus 1:
715 Q83 V90 DI83
GMAT 1: 780 Q50 V51
GRE 1: Q170 V169
Re: Five thousand of the 50,000 books published in country Z in 1991 were [#permalink]
1
Kudos
Raxit85 wrote:
Is not the information in correct option, i.e. (B) None of the films released in country Z in 1992 were based on books other than novels be the restatement of the premise - Exactly 25 of the films released in country Z in 1992 were based on those novels.

Both indicates the same meaning that films released in country Z in 1992 were based on Novel only (as Exactly word indicates in premise).

­Hi Raxit85,

Let's take a look at the information we have for books published in Z in 1991:
1. Total number of books: 50,000
2. Number of novels: 5,000

Remember that (2) is part of (1). Now let's take a look at the films released in Z in 1992:
3. Total number of films: 100
4. Number of films based on the novels in (2): 25

Conclusion: no more than 25% (25) of films released in Z in 1992 (100) were based on books published in country Z in 1991.

So the conclusion shifts from novels to books. This is a bit of a problem, as the number 25 from (4) is about number of films based on novels. What if all 75 of the remaining films were based on some of those 45,000 (50,000 − 5,000) books that are not novels? That would mean that we have 25 films based on novels (a type of book) and 75 films based on non-novel books. 100/100 is 100%, which is not "no more than 25%".

Option B tells us that the number of films released in Z in 1992 based on non-novel books is 0. This is great, as we can now say that the number of films based on books is 25 (number of films based on novels + number of films based on non-novel books = 25 + 0 = 25). This helps us conclude that no more than 25% of the films released in Z in 1992 were based on books published in Z in 1991.­
Re: Five thousand of the 50,000 books published in country Z in 1991 were [#permalink]
Moderators:
GMAT Club Verbal Expert
6979 posts
GMAT Club Verbal Expert
236 posts
CR Forum Moderator
821 posts