given the following information, what is the expected return on a portfolio that is invested 30 percent in both stocks A and C, and 40 percent in stock B

state of economy probability of state of economy stock a stock b stock c

boom .05 7.8% 23.6% 18.4%

normal .85 9.1% 15.4% 13.7%

recession .10 11.8% -12.3% 6.4%