Q3. How do you calculate a rate of return on a security? What about the return on a portfolio? Include the formula for each and provide and example for a 1 Year rate of return for a single security. SHOW YOUR WORK Q4. An investor has a portfolio of 4 securities. Each represents a 25% holding. The expected return on Security A is 8%, Security B is 10%, Security C2%, and Security 4 is 9%. What is the expected return on the portfolio? SHOW YOUR WORK