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There were 36.000 hardback copies of a certain novel sold [#permalink]

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31 Mar 2012, 21:08

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64% (01:51) correct
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There were 36,000 hardback copies of a certain novel sold before the paperback version was issued. From the time the first paperback copy was sold until the last copy of the novel was sold 9 times as many paperback copies as hardback copies were sold. If a total of 441,000 copies of the novel were sold in all, how many paperback copies were sold?

A. 45,000 B. 360,000 C. 364,500 D. 392,000 E. 396,900

There were 36,000 hardback copies of a certain novel sold before the paperback version was issued. From the time the first paperback copy was sold until the last copy of the novel was sold. 9 times as many paperback copies as hardback copies were sold. If a total of 441,000 copies of the novel were sold in all, how many paperback copies were sold?

A. 45,000 B. 360,000 C. 364,500 D. 392,000 E. 396,900

Say x was the # of hardback copies sold from the time the first paperback copy was sold.

Then the total # of paperback copies sold was 9x; Hence the total # of copies sold was (hardback)+(paperback)=(36+x)+(9x)=441 --> x=40.5.

So, the total # of paperback copies sold was 9x=9*40.5=364.5 or 364,500.

Re: There were 36.000 hardback copies of a certain novel sold [#permalink]

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16 Nov 2013, 14:24

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: There were 36.000 hardback copies of a certain novel sold [#permalink]

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28 May 2016, 12:37

I used reverse plugging in to solve this problem.

I started with answer B: *PB = paperback *HC = hardcopy 360000 PB/ 9 PB per HC = 40000 HC sold 360000+40000+36000 = 436000 copies sold 436000 < 441000 so I know the answer must be higher

Answer D: Not even divisible by 9 so not a logical answer

Answer E: 396900 PB/ 9 PB per HC = 44100 HC 396900 + 44100 + 36000 > 441000

Re: There were 36.000 hardback copies of a certain novel sold [#permalink]

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15 Aug 2017, 20:18

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
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