Answer:
19.50%
Step-by-step explanation:
In this question, we apply the Capital Asset Pricing Model (CAPM) formula which is shown below
Expected rate of return = Risk-free rate of return + Beta × (Market rate of return - Risk-free rate of return)
For Stock R
= 3% + 2.5 × (13% - 3%)
= 3% + 2.5 × 10%
= 3% + 25%
= 28.00%
For Stock S
= 3% + 0.55 × (13% - 3%)
= 3% + 0.55 × 10%
= 3% + 5.5%
= 8.50%
The difference would be
= 28% - 8.5%
= 19.50%