Charlie has a portfolio that has $40\%$ of its funds invested in Security A$,50\%$ of its funds invested in Security B$,$ and $10\%$ invested in the risk$-$free asset. The risk$-$free asset earns $4\mathrm{.}5\%.$ Security A has an expected return of $8\%$ and a standard deviation of $16\%.$ Security B has an expected return of $10\%$ and a standard deviation of $24\%.$ Securities A and B have a coefficient of correlation of $0\mathrm{.}50.$ What is the expected return of the portfolio?