A stock has a beta of $0\mathrm{.}7$ and an expected return of $17$ percent. A risk$-$free asset currently earns $4\mathrm{.}8$ percent.

a$.$ What is the expected return on a portfolio that is equally invested in the two assets? $($Do not round intermediate calculations. Enter your answer as a percent rounded to $2$ decimal places.$)$

Expected return

b$.$ If a portfolio of the two assets has a beta of $0\mathrm{.}50,$ what are the portfolio weights? $($Do not round intermediate calculations. Enter your answers as a percent rounded to $2$ decimal places.$)$

$\backslash$table$[[,$Portfolio Weight$],[$Stock$,71\mathrm{.}43\%$