Answer: 8%
Step-by-step explanation:
The expected return is a weighted average of the returns given the probability of certain states of the economy:
= (Prob. of boom * return if boom) + (Prob. of normal * return if normal) + (Prob. of weak * return if weak)
= (20% * 35%) + (50% * 14%) + (30% * -20%)
= 0.07 + 0.07 - 0.06
= 8%