MicroTech Corporation is subject to a $30\%$ income tax rate. Given the following information about the firm$$s capital structure, calculate the corporation$$s weighted$-$average cost of capital $($WACC$)$: $($Do not round intermediate calculations. Round your answers to $2$ decimal places. $($i$.$e$.0\mathrm{.}1234=12\mathrm{.}34\%).)$

Source of Funds Market Value After$-$Tax Rate or Expected Return

Long$-$term debt $ $70$ million $10\%$

Preferred stock $100$ million $12$

Common stock $90$ million $15$