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; X8 m0 Y9 L) @6 q
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B.605.39.217.771 I6 y- {2 D/ ^% n( C, ^3 z
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發表於 2007-9-11 07:38 PM
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