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?
4 T/ X1 e. x5 }/ Mtvboxnow.comA.50
4 [+ s! c* z; v+ {, ptvboxnow.comB.60
( Q* D# V* Y* v* U6 v/ z1 i公仔箱論壇C.65( C- q7 A. w0 e9 e6 _! D7 [3 {
D.75 |
發表於 2007-9-11 07:38 PM
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