Birch manufacturing is considering the addition of another product line to its offerings. Equipment needed to produce the new line will cost $180,370. Birch estimates that the net cash inflows from the new product line will be as follows: Years 1-10 Years 11-15 Year 16-20 $16.630 (each year) $4.690 (each year) $1,930 What is the payback period for the new product line? Payback period years Save for Later (b) The parts of this question must be completed in order. This part will be available when you complete the part above