Need Help

On second thoughts, XYZ decides to keep the old truck. They can choose to retrofit it or not. The retrofit will cost $3,441. After the retrofit, the annual fuel and maintenance cost will be $740 for the first year and increases by $119 each year. XYZ 's minimum attractive rate of return is 4%. If XYZ will get rid of the old truck in six years, what is the total present cost of retrofit