Answer:
172.8%
Step-by-step explanation:
The risk free rate is 4%
The expected return on the market portfolio is 12%
The beta is 0.9
Therefore the required rate of return can be calculated as follows
= 4 × 0.9(12×4)
= 4 × 0.9(48)
= 4 × 43.2
= 172.8%
Hence the required rate of return is 172.8%