you need to think harder

来源: guest007 于 2010-01-25 09:48:27 [] [旧帖] [给我悄悄话] 阅读数 : (126 bytes)
本帖于 2010-04-08 17:51:58 时间, 由版主 于德利 编辑

please think harder-
15 x 0.2 = 3
15 x 0.8 = 12

85 x 0.2 = 17
85 x 0.8 = 68

12 out of 12+17 ~= 41%

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• 回复：you need to think harder -jinjing- ♀ 给 jinjing 发送悄悄话 (89 bytes) () 01/26/2010 postreply 10:14:48

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