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?tvb now,tvbnow,bttvb" K5 Q5 v2 @+ R7 |4 ^5 m* [
A.50公仔箱論壇 Q* L d7 O W4 b$ W7 ]
B.60
" n/ y* J# ?7 NTVBNOW 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
. V3 ]2 E5 h' I: VD.75 |
發表於 2007-9-11 07:38 PM
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