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?- W" g* m/ D6 B8 f% u. j
A.50
6 p1 e: ~2 ` ~5 _8 {0 s( VB.60tvb now,tvbnow,bttvb+ y3 @9 h3 h% ]4 b
C.65
$ E p3 N% t; ytvb now,tvbnow,bttvbD.75 |
發表於 2007-9-11 07:38 PM
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