b$.$ PSK Enterprises has long$-$term debt which has a face value of $$250$ million and is currently traded at $$96$ million. The debt pays a semiannual coupon of $$7\mathrm{.}5$ million and has a remaining maturity of $10$ years. The market value of the equity is $$240$ million and the pretax WACC of the firm is $14\%.$ The firm has a marginal tax rate of $27\%.$ Please calculate the levered and the unlevered cost of equity for PSK Enterprises.