Humble Manufacturing is interested in measuring its overall cost of capital. The firm is in the 40% tax bracket. Current investigation has gathered the following data: Debt The firm can raise debt by...

Humble Manufacturing is interested in measuring its overall cost of capital. The firm is in
the 40% tax bracket. Current investigation has gathered the following data:
Debt The firm can raise debt by selling $1,000-par-value, 10% coupon interest rate, 10-
year bonds on which annual interest payments will be made. To sell the issue, an
average discount of $30 per bond must be given. The firm must also pay flotation costs
of $20 per bond.
Preferred stock The firm can sell 11% (annual dividend) preferred stock at its $100-per-
share par value. The cost of issuing and selling the preferred stock is expected to be $4
per share.
Common stock The firm’s common stock is currently selling for $80 per share. The firm
expects to pay cash dividends of $6 per share next year. The firm’s dividends have been
growing at an annual rate of 6%, and this rate is expected to continue in the future. The
stock will have to be underpriced by $4 per share, and flotation costs are expected to
amount to $4 per share.
Retained earnings The firm expects to have $225,000 of retained earnings available in
the coming year. Once these retained earnings are exhausted, the firm will use new
common stock as the form of common stock equity financing.

a. Calculate the individual cost of each source of financing. (Round to the nearest
0.1%.)