determined the market value of the firm's capital structure as follows:

a$.$ Calculate component weights of capital.

The weight of debt in the firm's capital structure is $\%.($Round to two decimal pl The weight of preferred stock in the firm's capital structure is $\%.($Round to two The weight of common stock in the firm's capital structure is

$\%.($Round to two

b$.$ Calculate component costs of capital.

The after$-$tax cost of debt for the firm is $\%.($Round to two decimal places.$)$

Data table

$\backslash$table$[[$Source of Capital,Market Values$],[$Bonds$,$$$4,200,000$