Consider the following information:

Rate of Return If State Occurs

State of Probability of

$\backslash$table$[[,$State of$,$Stock A$,$Stock B$,$Stock C$],[$Economy$,$Economy,,,$],[$Boom$,\mathrm{.}60,\mathrm{.}15,\mathrm{.}23,\mathrm{.}42],[$Bust$,\mathrm{.}40,\mathrm{.}18,\mathrm{.}08,-\mathrm{.}09]]$

What is the expected return of a portfolio equally invested in stocks A$,$ B$,$ and C$?$ Round to the nearest XX$.$XX$\%$