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标题: xdf/ps/section 1 [打印本页]

作者: hopr999    时间: 2005-6-7 06:27     标题: xdf/ps/section 1

36000 hard copies of a certain novel sold before the paper version was issued. from the time the first paper copy was sold until the last copy of the novel was sold, 9 times as many paper copies as hard copies were sold. If a total of 441000 copies sold in all, how many paper copies sold?

a. 45000

b.360000

c.364500

d.392000

why c?

先谢谢了!


作者: hopr999    时间: 2005-6-7 06:29

i calculated again:

assume hardcopy to sell more is X:

36000+X + 9 (36+X) = 441000

==> X=396900

should be E. why the answer is C?????????


作者: diatomss    时间: 2005-6-7 07:00

hard copy是指书的精装版,paper copy是简装版;一般新书发行时,一开始会先

只发行精装版...过段时间才有简装版出版...

所以这句话:from the time the first paper copy was sold until the last

copy of the novel was sold, 9 times as many paper copies as hard copies

were sold.是指简装版出版之后,所卖出的精装版是简装版的1/9

所以答案是(441-36)*9/10=364.5

C IS CORRECT...


作者: hopr999    时间: 2005-6-8 06:41

thanks  a  lot !!!




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