Answer:
Projects W and X have lower expected returns
Projects Y and Z have higher expected returns
Explanation:
Given
Solving (a): Compare the expected return of each project to 12.1%
Expected Return of each project is calculated as:
For Project W:
Lower Expected return
For Project X:
Lower Expected return
For Project Y:
Higher Expected return
For Project Z:
Higher Expected return
There is no question in (b)