There is a proposal to buy equipment that will cost $120,000. The new equipment will increase after tax cash flow by $30,000 during the first year. The annual cash inflow will increase by $5,000 each year, reaching $45,000 in year 4. At the end of year 4, the equipment can be sold for $10,000. What is the internal rate of return for the project (nearest 1/10 of one percent without symbol, eg, 12.5)