could you plz solve the problem with a step so I can understand it

1- The following cash flows are give for the two mutually exclusive project x and y. the project x requires an initial investment 11,000 in time (0) and project y needs an initial investment of 10,00 in time (0). Year project x project y 1 5000 9000 2 6000 5000 3 7500 4500 4 8,000 3500 (a) Calculate the NPV for each project using a discount rate if 12% (b) State you accept/reject decision (c) What would be your decision if they were independent project? 2- Winter wear is considering a 5 year project with an initial cost of 221,000. The project will produce cash inflows of 59,500 a year over the life of the project. what is the net present value (NPV) if the required rate of return is 14.8 percent. 3- A project has a required return of 12.25 percent. The project's initial is 13,000 and its cash flows are: year1= 4800 year 2= 9000 and year 3= 3000. what is the project's IRR 4- The candy hut is considering a project with an initial cost of 7500. The project will produce cash flows of year 1 = 3000 year 2 = 2500 year 3 = 3000 and year 4 = 2500 . what is the payback period