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?
( B L4 q! w: {2 L$ zTVBNOW 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。A.50tvb now,tvbnow,bttvb' }) ^ c3 [2 p$ R' z5 b% Y
B.60公仔箱論壇* Q( [, D1 L T$ R, j
C.65tvb now,tvbnow,bttvb7 y8 I- l1 m' J# k1 q
D.75 |
發表於 2007-9-11 07:38 PM
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