portfolio is formed by investing $32\%$ in Asset $-1,28\%$ in asset $2$ and $40\%$ in asset $3.$the co variances of the three assets with market portfolio are $24,36$ and $48.$the variance of the market portfolio is $40.$the risk less rate is $7\mathrm{.}5\%$and the expected return on the market portfolio is $12\mathrm{.}5\%.$what is the expected return of this portfoilio.assumignthat CAPM is valid