$555$CasaSi Inc., is considering a scale$-$enhancing project. The market value of the firm$$s debt is $$300$ million and the market value of the firm$$s equity is $$400$ million. The debt is considered risk$-$free. The corporate tax rate is $20\%.$ Regression analysis indicates that the beta of the firm$$s equity is $1\mathrm{.}4.$ The risk$-$free rate is $3\%$ and the market risk premium is $11\%.$

What would the project$$s discount rate be in the hypothetical case that CasaSi Inc., is all equity?

Do not enter the $\%$ symbol; use two decimals. For example, if you obtain $6\mathrm{.}537\%$ then enter $6\mathrm{.}54$; if you obtain $0\mathrm{.}07$ then enter $7\mathrm{.}00$