Answer:
1.55
Step-by-step explanation:
When the investment is doubled the return would be 100% and when it is halved, the return would be -50%.
Probability Return
70% 2*100 = 200
30% 0.5*100 = 50
Expected Return = Probability of Doubling Investment*Rate of Return on Doubling of Investment + Probability of Halving Investment*Rate of Return on Halving of Investment
Expected Return = 70%*200% + 30%*50%
Expected Return = 0.7*200% + 0.3*50%
Expected Return = 1.4 + 0.15
Expected Return = 1.55