$6$

Miller & Mortimer have a client Ms$.$ Kelly with the following investment portfolio:

$\backslash$table$[[$Kelly$\text{'}$s Portfolio,$$ Amount,Proportion,E$($r$)$ per annum,SD per annum$],[$Money Market Bonds,$$200,000,10\%,4\mathrm{.}6\%,1\mathrm{.}6\%$