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?www2.tvboxnow.com- n4 ]( Z0 b& r( A+ e& X. \5 O0 b+ R
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。! y, Z7 l7 N$ k
B.60公仔箱論壇( F0 k" m# _) O; ^, K
C.65
9 y1 C# |$ N/ t/ M公仔箱論壇D.75 |
發表於 2007-9-11 07:38 PM
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