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?公仔箱論壇' i7 e7 Q6 g; q3 P) E! B
A.50
; S. p% q; L% `1 bTVBNOW 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。B.60
- p: O# d: k ~" W6 b5 I( T$ TTVBNOW 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。C.65
% \- ]' D: y; F3 _" yD.75 |
發表於 2007-9-11 07:38 PM
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