Q$\mathrm{.}2$ NextBest Ltd will raise a fund for the project using $40\%$ debt and $60\%$ equity. It can raise the debt at the market interest rate which is $9\%.$ The tax rate applicable to it is $30\%.$ The risk$-$free rate is $6\%$; market risk premium is $5\mathrm{.}5\%,$ and beta is $1\mathrm{.}1.$ Based on this information, compute the after tax cost of debt, cost of equity and weighted average cost of capital for Next Best Ltd$.$

$(02$ marks$)$