Solve by using excel present worth and the annual worth

2) Machines that have the following costs are under consideration for a robotized welding process. Using an interest rate of 10% per year, determine which alternative should be selected on the basis of a- present worth analysis. b-Annual worth analysis Machine X Machine Y First cost, S -250,000 -430,000 Annual operating cost, $ per year -60,000 -40,000 Salvage value, $ 70,000 95.000 Life, years 3 6