# Inhabitants 81581

The number of inhabitants of the city decreased in 10 years from 72800 to 56000. What is the annual decrease in the population in percentage?

## Correct answer:

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### You need to know the following knowledge to solve this word math problem:

**algebra**- exponential equation
- geometric progression
**arithmetic**- exponentiation
**basic functions**- percentages
- exponential function

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