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?
% s, C; W6 F+ a# g公仔箱論壇A.50
+ f! i# e: ?7 T; D; U5 {公仔箱論壇B.60
2 }# u+ r9 u; U1 BC.65tvb now,tvbnow,bttvb/ r) n& x) a, g1 R2 r/ F- q3 h
D.75 |
發表於 2007-9-11 07:38 PM
| 
