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?" Y6 @( K$ R8 Y, p5 L
A.50tvb now,tvbnow,bttvb9 I* U1 a. Z* ]" Y+ |! S
B.60: M$ B, B: v( {$ W4 j# h2 _! w* P
C.65tvb now,tvbnow,bttvb; O0 P! L5 q; h$ P6 e; K. Z# r! J
D.75 |
發表於 2007-9-11 07:38 PM
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