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?5.39.217.77:8898- @3 H( b+ s% u
A.50tvb now,tvbnow,bttvb, s: x% \$ K/ Z5 ]% g; }
B.60
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D.75 |
發表於 2007-9-11 07:38 PM
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