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?
K( a# n2 F7 V# i P, `7 HTVBNOW 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.50
" M, B( v1 r; S9 |' `tvb now,tvbnow,bttvbB.60
9 C- I* l1 D! f5 M$ |C.65TVBNOW 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。+ I8 f, S; {! [, G' {: [! B
D.75 |
發表於 2007-9-11 07:38 PM
| 
