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?5.39.217.77) T5 c/ X2 L0 j, f; k# `
A.50TVBNOW 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 Q% D) @2 q6 F0 \! J
B.60
1 y+ Z1 g* v9 m$ K1 Z# k/ b5.39.217.77C.65
4 T9 `8 b% w+ XD.75 |
發表於 2007-9-11 07:38 PM
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