Thyssen Corporation is currently a levered firm with a debt$-$equity ratio of $0\mathrm{.}35$ and a pretax cost of debt of $6\mathrm{.}2\%.$ The firm has a cost of equity of $13\mathrm{.}50\%.$ The firm is considering switching to an all equity firm. What will the firm's cost of equity be if it makes the switch? Ignore taxes.