Your mother just received a $250,000 inheritance. If she invests her money in a diversified equity portfolio returning 8 percent per year, approximately how long will it take her to become a millionaire? Click on the table icon to view the FVIF table If she invests her money in a diversified equity portfolio returning 8 percent per year, it will take her 18 years to become a millionaire. (Round to the nearest year.)