NO.PZ2022090805000014
问题如下：
A firm with a marginal tax rate of 30% has a weighted average cost of capital of 7.4%. The before-tax cost of debt is 5%, and the cost of equity is 10%. The weight of equity in the firm’s capital structure is closest to:
选项：
A.
50%
B.
60%
C.
70%
解释：
B is correct.
WACC = wdrd(1 – t) + were, where wd + we = 1
7.4 = (1 – we) × 5 × (1 – 0.3) + we × 10
we = 60%
老师，套公式写一下可以吗
