The estimated cost of capital after the restructuring is 10.82%.
Using the MM Proposition II with taxes, we need to first calculate the Cost of unlevered equity;
Cost of unlevered equity = (Cost of levered equity+cost of debt*D/E*(1-tax rate))/(1+D/E*(1-tax rate))
Cost of unlevered equity = (24.10% + 8%*80%/20%*(1-25%)) / (1+80%/20%*(1-25%))
Cost of unlevered equity = 12.03
Cost of levered equity = Cost of unlevered equity + (Cost of unlevered equity-Cost of debt)*D/E*(1-tax rate)
Cost of levered equity = 12.03% + (12.0250%-6%)*40%/60%*(1-25%)
Cost of levered equity = 15.04%
Cost of capital (WACC) =40%*6%*(1-25%)+60%*15.0375%
Cost of capital (WACC) = 0.018 + 0.090225
Cost of capital (WACC) = 0.108225
Cost of capital (WACC) = 10.82%
In conclusion, the estimated cost of capital after the restructuring is 10.82%.
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