Smooty Inc. plans to issue a $20-$ year noncallable bond with a $7\mathrm{.}00\%$ annual coupon $($paid semiannually$)$ at a market price of $$1050($note par value is $$1000).$ The company's tax rate is $40\mathrm{.}00\%.$ The firm raised $35\%$ of its total capital by issuing this bond, and rest of the capital from common equity. The firm's WACC is $11\mathrm{.}7\%.$ What must be the cost of firm's common equity measured in $\%.($If the cost of common equity is $12\mathrm{.}34\%,$ just enter $"12\mathrm{.}34")$