Maria$$ Gonzalez, Ganado's Chief Financial$$ Officer, estimates the$$ risk$-$free rate to be $3\mathrm{.}80\%,$ the$$ company's credit risk premium is $4\mathrm{.}40\%,$ the domestic beta is estimated at $0\mathrm{.}95,$ the international beta is estimated at $0\mathrm{.}78,$ and the$$ company's capital structure is now $20\%$ debt. The expected rate of return on the market portfolio held by a$$ well$-$diversified domestic investor is $9\mathrm{.}70\%$ and the expected return on a larger globally integrated equity market portfolio is $8\mathrm{.}80\%.$ The$$ before$-$tax cost of debt estimated by observing the current yield on$$ Ganado's outstanding bonds combined with bank debt is $8\mathrm{.}10\%$ and the$$ company's effective tax rate is $38\%.$ For both the domestic CAPM and$$ 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