Dudster Manufacturing has 2 options for installing legally required safety equipment. Option Ex has an initial cost of $25,000 and annual operating costs over 3 years of $5,000, $5,250, $5,600

Option WYE has an initial cost of $40,000 and annual operating costs of $4,000, $4,200, $4,450, $4,750, $5,100. Whether Dudster chooses Ex or Wye, the equipment is always needed and must be replaced at the end of its useful life. Which choice is least expensive over the long run? Use a discount rate of 9%.

Answer:
NPV Project X = -$25,000 - $5,000/(1.09)1 - $5,250/(1.09)2 - $5,600/(1.09)3 =-$38,330.20
NPV = -$40,000 - $4,000/(1.09)1 - $4,200/(1.09)2 - $4,450/(1.09)3 - $4,750/(1.09)4 - $5,100/(1.09)5 = -$57,320.67. Using a financial calculator, the EAC for project Ex is N = 3, i = 9,PV = -38,330.20, PMT = 15,138.57, FV = 0. For Project Wye N = 5, i = 9,PV = -57,320.67, PMT = 14,736.71, FV = 0. Project Wye has the lower EAC (PMT) and should be selected.