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?, d5 j# d W) u
A.50 $ h8 \, F0 _2 _. S0 ^3 Q7 Z) b5 L( L4 w5.39.217.77:8898B.60 $ a0 ?7 E2 `8 w/ |" t9 v公仔箱論壇C.65tvb now,tvbnow,bttvb$ F3 `) o* |" A- C/ G1 Z
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
