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。3 R' W4 r# P$ n5 ~" f2 N2 V
A.50
4 y; p7 V1 Z8 K8 l' [B.605.39.217.77:88984 ?, m6 b0 {7 y H% C5 m8 h
C.650 G. x* Y4 b5 X9 X% [7 p
D.75 |
發表於 2007-9-11 07:38 PM
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