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500 PS#16

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dunkin77 Really wants to Beat The GMAT! Default Avatar
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500 PS#16 Post Sun Apr 01, 2007 7:16 am
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    Hi,

    I thought the answer is E) but turned out to be C)...Can anyone help me?


    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

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    Post Sun Apr 01, 2007 8:05 am
    dunkin77 wrote:
    Hi,

    I thought the answer is E) but turned out to be C)...Can anyone help me?


    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
    Let H be the number of Hardback copies sold after they introduced the Paperback
    Then 9*H will be the total number of paperbacks sold

    Now the total no of copies sold = 36000 + H + 9*H =441000
    => 10H= 405000
    H= 40500
    No of paperbacks = 40500*9 (9H)

    = 364500

    C it is

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    dunkin77 Really wants to Beat The GMAT! Default Avatar
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    Post Sun Apr 01, 2007 9:55 am
    Very Happy I got it - Thanks!

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