please explain how to solve in excel

Sam's refrigerator has just died. He can buy (1) a basic refrigerator or (ii) a more efficient refrigerator with an Energy Star designation. Sam eams 4% compounded annually on his investments and he wants to consider a 10-year planning horizon. Using the data given below, calculate the Net Present Worth for each alternative and make your recommendation as to which refrigerator Sam should buy. Basic Unit Energy Star Initial Cost delivery & Installation 760 860 Professional Servicing (at EOY 5) 100 100 Annual energy costs 120 75 Salvage value (end of year 10 150 175