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# In North america there has been an explosion of public

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Intern
Joined: 10 Apr 2011
Posts: 38

Kudos [?]: 82 [0], given: 7

In North america there has been an explosion of public [#permalink]

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25 Apr 2011, 18:25
00:00

Difficulty:

55% (hard)

Question Stats:

67% (01:25) correct 33% (02:09) wrong based on 9 sessions

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In North america there has been an explosion of public interest in, and enjoyment of, opera over the last three decades. The evidence of this explosion is that of the 70 or so professional opera companies currently active in North America, 45 were founded over the course of the last 30 years.

The reasoning above assumes which one of the following?

A. All of the 70 professional opera companies are commercially viable options
B. There were fewer than 45 professional opera companies that had been active 30 years ago and that ceased operations during the last 30 years.
C. There has not been a corresponding increase in the number of professional companies devoted to other performing arts.
D. The size of the average audience at performances by professional opera companies has increased over the past three decades.
E. The 45 most recently founded opera companies were all established as a result of enthusiasm on the part of a potential audience.

________________________________________________________________________
I used the Negation Technique to solve this problem, but I am still confusing about the number 45. If there were more than 45 opera companies that had been active 30 years ago and that ceased operations during the last 30 years, then the current active numbers of operas will be decreased, so there won't be an increase of public interest in operas. So I chose B.
Am I understanding this problem correctly?

Thanks,
[Reveal] Spoiler: OA

_________________

Yvonne Hao

Kudos [?]: 82 [0], given: 7

Senior Manager
Joined: 09 Feb 2011
Posts: 272

Kudos [?]: 218 [0], given: 13

Concentration: General Management, Social Entrepreneurship
Schools: HBS '14 (A)
GMAT 1: 770 Q50 V47
Re: Strengthen Problem [#permalink]

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25 Apr 2011, 21:05
You are correct. the author bases his reasoning on the fact that out of 75 companies, 45 have been founded in last 30 years. but what is 30 years ago there were 200 opera comanies, and they kept shutting down so that only 30 of them were left- which would imply that over the last 30 years, some 170 pre-existing companies shut down, while 30 new opened- clearly indicating a drop in interest.

Thus the author does base his assumption on (B), as you correctly pointed out.

Kudos [?]: 218 [0], given: 13

Intern
Joined: 10 Apr 2011
Posts: 38

Kudos [?]: 82 [0], given: 7

Re: Strengthen Problem [#permalink]

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26 Apr 2011, 09:48
vivesomnium wrote:
You are correct. the author bases his reasoning on the fact that out of 75 companies, 45 have been founded in last 30 years. but what is 30 years ago there were 200 opera comanies, and they kept shutting down so that only 30 of them were left- which would imply that over the last 30 years, some 170 pre-existing companies shut down, while 30 new opened- clearly indicating a drop in interest.

Thus the author does base his assumption on (B), as you correctly pointed out.

Thanks.
_________________

Yvonne Hao

Kudos [?]: 82 [0], given: 7

Re: Strengthen Problem   [#permalink] 26 Apr 2011, 09:48
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# In North america there has been an explosion of public

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