同學，你好 1.資金收益率=6%*0.6=33.6% 2.股權資本成本=3.6%+5%=8.6% 3.股權資本成本=0.2*(1+3%)/4+3%=8.15% 4.加權股權資本成本=(8.6%+8.15%)/2=8.375% 5.長期借款資本成本=(1000*6%)/(1000*(1-2%))=6.12% 6.債券成本=(1000*10%*(1-25%))/(1200*(1-4%))=6.51% 7.普通股=(1000+2000)*50%=1500 8.長期借款=3000*25%=750 9.公司債券=3000*25%=750 10.邊際資本成本=((1500-2000*40%)*8.375%+(750-2000*30%)*6.51%+(750-2000*30%)*4.59%）/1000=7.53% 11.加權平均資本成本=8.375%*50%+6.51%*25%+4.59%*25%=6.96%