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?tvb now,tvbnow,bttvb8 H5 T+ j1 z3 p5 z7 V
A.50 4 k9 R7 [* j+ K9 V& W% q" Gos.tvboxnow.comB.60tvb now,tvbnow,bttvb! |, o! g; Q+ Q( \
C.65 * n0 s0 ^# |* j: O2 i9 dtvb now,tvbnow,bttvbD.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
