there r 2 groups of worker.. skilled n partially skilled. if both group work togather they nid 30 days to finish the job. if partially skilled worker can oni do 2/3 of the skilled worker did in a day. how many days needed if only partially skilled worker is workin to finish the job?TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。- Z* u, |1 n5 S6 ~9 ^* S: O
A.50
4 V& h( P/ i& A+ t) b2 CB.60
w7 ~* L1 R4 L" ^: V$ j5.39.217.76C.65
) D5 v/ K4 y5 Z2 G }公仔箱論壇D.75 |
發表於 2007-9-11 07:38 PM
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