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。4 g; X# [9 k# F; E3 U2 v! a5 A' [
A.50
+ G+ _! N: m8 ?, G# x公仔箱論壇B.60
a' Q6 E- Z; L3 w& Otvb now,tvbnow,bttvbC.65
4 T" a$ C( o) s& htvb now,tvbnow,bttvbD.75 |
發表於 2007-9-11 07:38 PM
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