Answer: 41.90%
Step-by-step explanation:
First calculate the risk free rate:
Required return = risk free rate + beta * (Market return - risk free rate)
28.95% = rf + 1.85 * (18% - rf)
28.95% = rf + 33.3% - 1.85rf
28.95% = -0.85rf + 33.3%
0.85rf = 33.3% - 28.95%
rf = 4.35%/0.85
rf = 5.12%
New required return;
Required return = risk free rate + beta * (Market return - risk free rate)
= 5.12% + 1.85 * (25% - 5.12%)
= 41.90%