Assume that the CPI index in 2018 was 300 and that the CPI index in 2019 was 400 (these numbers are made up).Please calculate what the inflation rate would be and please type your work for full credit.If I only see the final answer I will award half credit only. After you calculate the inflation rate, please comment on whether or not this number seems realistic compared to what the United States has experienced in the last several decades.