Williamson, Inc., has a debt$-$equity ratio of $2\mathrm{.}57.$ The company's weighted average cost of

capital is $9$ percent, and its pretax cost of debt is $7$ percent. The corporate tax rate is $22$

percent.

c$.$ What would the weighted average cost of capital be if the company's debt$-$equity ratio

were $\mathrm{.}65$ and $1\mathrm{.}60?($Do not round intermediate calculations and enter your answers

as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$