问个输血~~

serenashu · 发表于 2010-10-18 16:20:21

A pharmaceutical company received $3 million in royalties on the first $20 million in sales of the generic equivalent of one of its products and then $9 million in royalties on the next $108 million in sales.By approximately what percent did the ratio of royalties to sales decrease from the first $20 million in sales to the next $108 million in sales?

A.8%

B.15%

C.45%

D.52%

E.56%

算不出来~~

Nexusman · 发表于 2010-10-18 16:31:35

[(3/20)-(9/108)] / (3/20) => (1/15)/(3/20) =0.444
所以應該是(C) 45%

serenashu · 发表于 2010-10-18 17:07:26

[(3/20)-(9/108)] / (3/20) => (1/15)/(3/20) =0.444
所以應該是(C) 45%

-- by 会员 Nexusman (2010/10/18 16:31:35)

哦，谢谢~~~

问个输血~~

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