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?5.39.217.76/ I: Y& M- \4 X8 I% G
A.50# f* p# c, E0 f6 A
B.60
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D.75 |
發表於 2007-9-11 07:38 PM
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