长期债券是不是写错了,应该是1600吧
长期债券资金成本率=1600 x 9%x(1-33%)/1600x(1-33%)=6.21%
优先股资金成本率=400x8%/400x(1-3%)=8.25%
普通股资金成本率=1000x11%/1000x(1-3%)+5%=11.34%
长期债券所占比重=1600/3000x100%=53.33%
优先股所占比重=400/3000x100%=13.33%
普通股所占比重=1000/3000x100%=33.34%
加权资金平均成本=6.21%x53.33%+8.25%x13.33%+11.34%x33.34%=38%
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