Suppose you invest $$400,000$ in Treasury bills and $$600,000$ in the market portfolio. What is the return on your portfolio if bills yield $6\%$ and the expected return on themarket is $13\%?$

$8\mathrm{.}675\%$

$10\mathrm{.}2\%$

$12\mathrm{.}5\%$

$7\mathrm{.}75\%$