The required return on equity for an all$-$equity firm is $12\mathrm{.}0$ percent. They are considering a change in cpital strative tos debt$-$to$-$equity ratio of $\frac{1}{2},$ the tax rate is $34$ percent, the pre$-$tax cost of debt is $8$ percent. Find the nert cast of captal if this firm changes capital structure.