1.6/2/25=12%
(6+9/2)/25=42%
(6+9+10/2)/25=80%
500*12%+100*42%+150*80%=222
(59850+11970)/(1000+222)=58.7725
75000/(1000+500)=50
5000/(1000+250)=4
完工:58.7725*1000+50*1000+4*1000=112772.5
在产品:59850+11970+75000+5000-112772.5=39047.5
2.600*60%*50%+450*(60%+40%*50%)=540
9000/(660+540)=7.5
完工:660*7.5=4950
在产品:9000-4950=4050