Birch manufacturing is considering the addition of another product line to its offerings. Equipment needed to produce the new line will cost $198,540. Birch estimates that the net cash inflows from the new product line will be as follows: 6 Years 1-10 Years 11-15 Year 16-20 $19,390 (each year) $4,640 (each year) $2,080 10 12 What is the payback period for the new product line? Payback period