Birchmaacturing is considering the addition of another product line to isol follows: a ment needed to produce the new line will cost $186.10 ch at increasino from the new product will be Years 1-10 Years 11-15 Year 16-20 $16,760 beach year) 14.810 teach year) $2.040 What is the payback period for the new product line! Payback period