i need answer in Excel

Two projects A and B present the following features Write wour answers below 1) Calculate the Cash flows of projects A and B. 2) Suppose that the Cash flows are constant for five years, calculate the NPV for each project. The discouat rate is 10%. 3) Calculate the NPV of the project A if the manager suggestr selling this project ending the third year and that the salvage value equals RO1.000