Birch manufacturing is considering the addition of another product line to its offerings. Equipment needed to produce the new line will cost $210,100. Birch estimates that the net cash inflows from the new product line will be as follows:
Years 1-10 $18,270 (each year)
Years 11-15 $5,480 (each year)
Year 16-20$1,900
(A) What is the payback period for the new product line?