An advertising campaign will cost $180,000 for planning and $30,000 in each of the next six years. It is expected to increase revenues permanently by $30,000 per year. Additional revenues will be gained in the pattern of an arithmetic gradient with $20,000 in the first year, declining by $5,000 per year to zero in the fifth year. What is the IRR of this investment? If the company's MARR is 10 percent, is this a good investment? The IRR is percent, which is the MARR, so the advertising campaign a good investment. (Round to one decimal place as needed.)