We know that <span>the Consumer Price Index
(CPI) is equals to </span>CPI=100*[cost of the pizza today/cost of the pizza <span>in the base year] [</span>cost of the pizza in the base year]=100*[cost of the pizza today/CPI] cost of the pizza today=$12 <span>CPI=200 so </span>[cost of the pizza in the base year]=100*[12/200]-----> $6 <span> the answer is </span>The cost of the pizza in the base year is $6<span>
