Use the following information to calculate the expected return and standard deviation of a portfolio that is $50$ percent invested in $3$ Doors, Inc., and $50$ percent invested in Down Co$.$: $($Do not round intermediate calculations. Enter your answers as a percent rounded to $2$ decimal places.$)$

$\backslash$table$[[,3$ Doors,,Inc.,Down Co$.],[$Expected return, $E(R),14\%,10\%,],[$Standard deviation, $,42,31,],[$Correlation$,,\mathrm{.}10,]]$

$\backslash$table$[[,,],[$Expected return,$12\mathrm{.}00,\%$