(1)根据资本资产定价模型:A=6%+1.3×(16%-6%)=19%
(2)
债券市场价值 C9元) |
股票市场价值 (万元) |
公司市场总价值 |
债券资金比重 |
股票资金比重 |
债券资金成本 |
权益资金成本 |
加权平均资金成本 |
400 |
1452.63 |
1852.63 |
21.59% |
78.41% |
B=6% |
C=19% |
D=16.19% |
600 |
1262.38 |
1862.38 |
32.22% |
67.78% |
7.5% |
20.2% |
16.11% |
800 |
1085.71 |
1885.71 |
42.42% |
57.58% |
9% |
21% |
15.91% |
1000 |
E=750 |
F=1750 |
G=57.14% |
H=42.86% |
10.5% |
26% |
I=17.14% |
B=8%×(1-25%)=6%
C=A=19%
D=6%×21.59%+19%×78.41%=16.19%
E=(400-1000×14%)×(1-25%)/26%=750
F=750+1000=1750
G=1000/1750×100%=57.14%
H=750/1750×100%=42.86%
或=1-57.14%=42.86%
I=10.5%×57.14%+26%×42.86%=17.14%
(3)由于负债资金为800万元时,企业价值最大,加权平均资本成本最低,所以此时的资本结构为公司最优资本结构。