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?
, n! K4 y, X! \$ y/ x" w5 b$ U) b' KA.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。/ p* V0 A! U/ v$ r* v1 R% s0 |
B.60tvb now,tvbnow,bttvb) G- x6 {: j# Y5 U0 T
C.65tvb now,tvbnow,bttvb. u1 X7 {; Y8 ]$ S8 ~
D.75 |
發表於 2007-9-11 07:38 PM
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