Answer:
WACC is 10.65%
Explanation
Given
Debt $300 million
$50 million preferred stock
$250 million common stock
tax 40%,
rd 7% cost of debt
rps 5.8 cost of preferred stock
rs 14% cost of common stock
W are also given the relevant weights for target capital structure
WACC is the weighted sum of the company's cost of financing throught debt or equity
WACC = Wd*rd(1-tc)+ We *Re
Equity in Shi's importer is divided in to two
SO WACC = 0.30*0.07(1-0.4) + 0.05*0.058 + 0.65 *0.14
=0.1065/10.65%