The following table shows the price of movie tickets and the cost for dinner for two for each decade from 19402016 a. Use 1940 as the base year. So the Date CPI for 1940 is 100 . Compute the CPI for each decade. (Formula: CPI=CostinbaseyearCostincurrentyearX 100). CPI for 1950 has been done for you. (CPI1950=3.988.42X100=211.56) b. Then calculate the rate of inflation for each year. Inflationrate=CPIbaseyearCPIcurrentyear-CPIbaseyearX100 c. Now, the base year is 1980 (CPI 1980=100 ). Calculate the CPI and inflation rate for the years 1990 to 2016