1.60*(S/A,10%,15)=60*31.772=1906.32

2.Q=1450000/(1300-930)=3918.92吨

S=3918.92*1300=5094596

3918.92/6000=65.32%

3.C=5%*(1-20%)*1000/2500+7%*500/2500+[2*(1+12%)/56*(1-4%)+12%]*1000/2500=0.016+0.014+0.065=9.5%

4.P=-100-20+20*(P/A,10%,10)+100*(1-10%)/10*(P/A,10%,10)+20*(P/S,10%,10)+100*10%*(P/S,10%,10)=-100-20+178.176+7.8+3.9=69.876可行

5.P=35*(P/A,10%,30)-275=54.91可行

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