please do it in 10 minutes will upvote

B6AF114 III. Shown below are the mean monthly income of workers and the consumer price index (CPI) for 2018 - 2020. The CPI is based in 2015. 2018 2019 2020 Mean Monthly Income (E) 2,250 2,340 2,330 Consumer Price Index 102.5 | 105.2 | 109.4 a. Calculate the rate of inflation in 2019 and 2020. Round your answer to one decimal place. (2 marks) b. Calculate the inflation-adjusted income for each year, in terms of 2015 prices. (2 marks) c. On average, were these workers better off in 2020 than in 2019? Explain your answer. (2 marks)