Joe's Hardware is adding a new product line that will require an investment of $ 1 comma 540 comma 000. Managers estimate that this investment will have a​ 10-year life and generate net cash inflows of $ 305 comma 000 the first​ year, $ 265 comma 000 the second​ year, and $ 230 comma 000 each year thereafter for eight years. The investment has no residual value. Compute the ARR for the investment. ​First, enter the​ formula, then compute the ARR of the new product line. ​(Enter your answer as a percent rounded to two decimal​ places