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CALCULATION OF GOLD, PETROL and PADDY INFLATION
cumulative inflation %=[{(nth year price)/(base year price)}(1/n)-1]x100n = nth year - base year
example: n for the year 2015 = 2015-1965=50 and
2015thcumulative inflation % (base 1965) = [{28623.50/75.00}1/50-1]*100 = 12.438%