[答案]

    (1)债券资金成本为:

    8%x(1-33%)/1-2%X100%=5.47%

    (2)优先股资金成本为:

    15%/1-2%x100%=15.31%

    (3)普通股资金成本为:

    17%/1-2%+1%=18.35%

    (4)加权平均资金成本为:

    200/500x5.47%+200/500x15.31%+100/500x18.35%=11.98%