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A project costs $120,000 and the expected annual returns are as given in the table below. Year Cash Flows 1 $18,500 2 $25,500 3 $27,980 $32,660 5 $40,230 a) (10 pts) What is the payback period of the project? 4 b) (15 pts) What is the discounted payback period at an interest rate of 15%