Suppose that the residents of Wolfgang spend all of their income on cauliflower, broccoli, and carrots. In 2014 they buy 100 heads of cauliflower for $200, 50 bunches of broccoli for $75, and 500 carrots for $50. In 2015 they buy 75 heads of cauliflower for $225, 80 bunches of broccoli for $120, and 500 carrots for $100. If the base year is 2014, what is the CPI in both years? What is the inflation rate in 2015?