The mayor of Trenton is considering the purchase of a new computer system for the city's tax department. The system costs $75,000 and has an expected life of five years. The mayor estimates the following savings will result if the system is purchased: Year Savings 1 $ 20,000 2 25,000 3 30,000 4 15,000 5 12,000 What can be said about the computer system's internal rate of return if the net present value at 12% is positive