please show math

3. MeClain, Edwards, Shiver, and Smith (MESS) LLC is considering the purchase of new automated cleaning equipment. The industrial engineer for the company, David "the Dirtman" R.,hasbeen asked to calculate the present worth of the two best alternatives based on the following data. David is so busy cleaning his office that he has asked you to help with the work. Determine which equipment should be purchased, given an interest rate of 8%