# Inflation

Once upon a time, tsar owned a money printer and printed and printed. The result of printing money prices went up,in the first year 3.9 %, in the second 6%, in the third 4.7% and in the fourth 5.5%.

Then tsar was failed in election.

Calculate the average annual inflation rate (percentage of price increase) during this four years.

Then tsar was failed in election.

Calculate the average annual inflation rate (percentage of price increase) during this four years.

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#### To solve this example are needed these knowledge from mathematics:

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