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Page 66, #42 -- CR practice questions. In the state of

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Page 66, #42 -- CR practice questions. In the state of [#permalink] New post 13 Jun 2011, 10:04
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Page 66, #42 -- CR practice questions.

In the state of Michigan, from '80 to '89, total spending on books purchased from all sources increased by 34 %. But, during the same time period, spending on fiction books, most of which were purchased from bookstores selling only new books, grew just 16 percent.

Which of the following statements about the perdiod from 80-89 is best supported by the bullshit above?


Answer : A -- spending on nonfiction books increased by more than 34%.

I did fairly well on these questions. Got 44/49 right. Understand all 4 of the other questions I got wrong, but I CANNOT for the life of me understand the logic here. Kapalan's explanation is piss poor.

HELP!
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Re: Totally annoyed -- CR question from Kaplan Premiere [#permalink] New post 13 Jun 2011, 10:31
Please post all the answer choices. Anyway, based on what is mentioned here, here is the justification :

Total Increase = 34% = Fiction + Non Fiction (eg $200 before => $268 now)
Increase in spending on Fiction = 16 % (eg $100 before => 116 now)
That means the increase in spending on Non Fiction has to be more than
34 % for the aggregate increase to be 34 %.(eg spending on non fiction = 268 - 116 = $152. Hence % increase = (152-100)/100 = 52 % which is greater than 34 %.

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Re: Totally annoyed -- CR question from Kaplan Premiere [#permalink] New post 13 Jun 2011, 10:36
DJK wrote:
Page 66, #42 -- CR practice questions.

In the state of Michigan, from '80 to '89, total spending on books purchased from all sources increased by 34 %. But, during the same time period, spending on fiction books, most of which were purchased from bookstores selling only new books, grew just 16 percent.

Which of the following statements about the perdiod from 80-89 is best supported by the bullshit above?


Answer : A -- spending on nonfiction books increased by more than 34%.

I did fairly well on these questions. Got 44/49 right. Understand all 4 of the other questions I got wrong, but I CANNOT for the life of me understand the logic here. Kapalan's explanation is piss poor.

HELP!


It is more a weighted average math question than a CR question.

If total spending increased by 34%
Fiction increased by 16%
Non-fiction must increase by more than 34%.

An average will always be between two extremes.
http://www.veritasprep.com/blog/2011/03 ... -averages/
http://www.veritasprep.com/blog/2011/04 ... ge-brutes/

I understand you were annoyed by the explanation but for the sake of benefit of this entire group, please post your question in its entirety without rewording or rephrasing anything.
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Re: Totally annoyed -- CR question from Kaplan Premiere [#permalink] New post 13 Jun 2011, 21:02
the average is 34.Hence if bottom limit is 16 then upper limit has to be > 34.
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Re: Totally annoyed -- CR question from Kaplan Premiere [#permalink] New post 14 Jun 2011, 06:59
Thank you all for your posts above! I apologize for not posting the entire problem; I was on my way out rushing to a Yankees game.

This is yet another example of how rusty I am with math.

@Amit -- the principle you lay out seems so simple yet I don't remember those principles and fundamentals.

I am going through the entire Kaplan premiere, Kaplan Math Workbook, then taking the Manhattan GMAT online course.
Re: Totally annoyed -- CR question from Kaplan Premiere   [#permalink] 14 Jun 2011, 06:59
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