a. is 10.65% but I'm not sure how to solve for the variance.

please write out your solution and don't use excel:)

Rate of Return If State Occurs State of Probability of State of Economy Economy Stock A Stock B Stock C .55 .06 14 Boom Bust .45 .34 -.07 10 .02 a. What is the expected return on an equally weighted portfolio of these three stocks? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) b. What is the variance of a portfolio invested 22 percent each in A and B and 56 percent in C? (Do not round intermediate calculations and round your answer to 6 decimal places, e.g., 161616.)