Answer:
a.
NPV X 44352,90
NPV Y 38729,29
b.
NPV X 28619,86
NPV Y 29008,94
Step-by-step explanation:
To get the present value of each cash flow we use excel or spreadsheets.
File is attached with the comparison of both investments.
Investment X
Net Present Value (NPV) 44353 (Interest rate 8%)
Net Present Value (NPV) 28620 (Interest rate 20%)
Investment Y
Net Present Value (NPV) 38729 (Interest rate 8%)
Net Present Value (NPV) 29009 (Interest rate 20%)