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?
- O" `1 Z' F7 ^A.50tvb now,tvbnow,bttvb7 [1 O* w' S, N6 k6 Y( j% ~! u+ n: \6 q
B.60* Z7 m- J s8 g& C o8 D
C.65
/ D# {5 C! I8 A; PD.75 |
發表於 2007-9-11 07:38 PM
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