YYY Company is considering a change in its capital structure. YYY Company currently has $$10$ million in debt carrying a rate of $10\%$ and its stock price is $$50$ per share with $4$ million shares outstanding. YYY Company is a zero$-$growth firm and pays out all of its earnings as dividends. The firm$$s EBIT is $$3$ million, and it faces a $20\%$ federal$-$plus$-$state tax rate. The market premium is $3\%$ and the risk$-$free rate is $5\%.$ ZZZ Company is considering increasing its debt level to a capital structure with $50\%$ debt, based on market values, and repurchasing shares with the extra money that it borrows. ZZZ Company will have to retire the old debt in order to issue new debt, and the rate on the new debt will be $7\%.$ YYY has a beta of $1.$

What is ZZZ Company$$s unlevered beta? Use market value D$/$S $($ which is the same as w$\_$d$$w$\_$s $)$ when unlevering.

What are ZZZ Company$$s new beta and cost of equity if it has $50\%$ debt?

What are ZZZ Company$$s WACC and total value of the firm with $50\%$ debt?