Ganado's Cost of Capital. Maria Gonzalez, Ganado's Chief Financial Officer, estimates the risk$-$free rate to be $3\mathrm{.}50\%,$ the company's credit risk premium is $4\mathrm{.}10\%,$ the domestic beta is estimated at $0\mathrm{.}99,$the international beta is estimated at $0\mathrm{.}75,$ and the company's capital structure is now $45\%$ debt. The expected rate of return on the market portfolio held by a well$-$diversified domestic investor is $9\mathrm{.}40\%$ and the expected return on a larger globally integrated equity market portfolio is $8\mathrm{.}60\%.$ The before$-$tax cost of debt estimated by observing the current yield on Ganado's outstanding bonds combined with bank debt is $8\mathrm{.}40\%$ and the company's effective tax rate is $35\%.$ For both the domestic CAPM and ICAPM, calculate the following:

a$.$ Ganado's cost of equity

b$.$ Ganado's after$-$tax cost of debt

c$.$ Ganado's weighted average cost of capital