I need help with these questions

Q) A firm has a WACC of 12.65% and is deciding between two mutually exclusive projects. Project A has an initial investment of $64.70. The additional cash flows for project A are: year 1=$19.36, year 2=$38.92, year 3=$58.46. Project B has an initial investment of $74.91. The cash flows for project B are: year 1=$53.73, year 2=$38.47, year 3=$30.69. Calculate the Following: -Payback Period for Project A: -Payback Period for Project B: -NPV for Project A: -NPV for Project B: Q2) Project Z has an initial investment of $80,757.00. The project is expected to have cash inflows of $27,126.00 at the end of each year for the next 20.0 years. The corporation has a WACC of 13.31%. Calculate the NPV for project Z