Answer :
15.8 % will be the overall cost of capital for the firm at 8% debt capital and 20% equity capital.
Weight of equity = 65%
Cost of Capital of equity = 20%
overall cost of equity = Weight of equity x Cost of Capital of equity
= 65% x 20%
= 13%
Weight of debt= 35%
Cost of Capital of debt = 8%
overall cost of debt = Weight of debt x Cost of Capital of debt
= 35% x 8%
= 2.80%
overall cost of capital for the firm = overall cost of equity + overall cost of
debt
= 13% + 2.80%
= 15.8%
the overall cost of capital for the firm is 15.8%
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