If 2015 is the base year, the inflation rate is [(CPI in 2015 - CPI in 2010) / CPI in 2010] x 100 .
The consumer price index is a measure of inflation. Inflation is the rise in general price levels in an economy.
CPI = (cost of basket of goods in current period / cost of basket of goods in base period) x 100
Inflation rate = (CPI in current year - CPI in base year) / CPI in base year x 100
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