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?
! z5 t* ^$ l# K+ v F1 dA.505.39.217.77* v1 T5 a# S" z
B.60! h4 a3 o, }0 S0 z/ s, ?( l) [; I
C.65
( [5 V! K) B9 o; T3 w: b& k, ?D.75 |
發表於 2007-9-11 07:38 PM
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