The management of Unter Corporation, an architectural design firm, is considering an investment with the following cash flows: Year Investment Cash Inflow 1 $65,000 $5,000 2 $5,000 $10,000 3 $20,000 4 $22,000 5 $25,000 6 $23,000 7 $21,000 8 $19,000 9 $18,000 10 $18,000 Required: 1. Determine the payback period of the investment. (Round your answer to 1 decimal place.)