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?
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! ^) C5 G8 p7 D" E Q/ PTVBNOW 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.601 A2 b5 r) L3 W& p. @5 D& N \
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。! c( W; ]+ X6 Z+ N& v7 C* g6 M
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發表於 2007-9-11 07:38 PM
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