Answer: 26.73%
Explanation:
You can calculate the expected return using the Capital Asset Pricing Model (CAPM).
Formula is:
Expected return = Risk free rate + beta * (Market return - risk free rate)
Use the previous figures to solve for the risk free rate:
20.47% = Rf + 1.39 * (16.50% - Rf)
20.47% = Rf + 22.935% - 1.39R
20.47% - 22.935% = Rf - 1.39Rf
-2.465% = -0.39Rf
Rf = -2.465% / -0.39
= 6.32%
New expected return is:
= 6.32% + 1.39 * (21% - 6.32%)
= 26.73%