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?: ^, Z, ]4 W9 u" B, k" Z) l/ Y. i; K
A.50 1 @' A' y4 z' O; {6 E2 kB.605.39.217.774 L; A% K- A& ~# ]4 l# t1 r
C.65; G# L* S$ y7 v
D.75作者: genzo2106 時間: 2007-9-12 01:52 PM
answer is D:75作者: Alan8166 時間: 2007-9-12 03:37 PM
answer is D:75作者: dokho 時間: 2007-9-16 12:13 AM
D FOR DOG作者: ken87 時間: 2007-9-16 01:01 AM 標題: 回復 #1 nelston 的帖子
