Answer:
0.4 or 40%
Step-by-step explanation:
The reward-to-volatility ratio, also known as the Sharpe ratio, is defined as the difference between the expected return rate and the risk-free rate divided by the standard deviation.
Expected return = 0.2
Risk-free rate = 0.10
Standard deviation = 0.25
The reward-to-volatility ratio is 0.4 or 40%