The following table gives the population of a town from 2017 to 2021. Some data is missing from it. How much is the increase or decrease of population in 2021 over 2020?
The table below provides the population details for men, women, and children over the years from 2017 to 2021. Some data is missing. The total population and the increase or decrease over the preceding year are also provided.
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When calculating the increase or decrease in population, remember to use the total population formula and consider all factors (men, women, children) in each year.
Step 1: Analyze the given data.
The table provides population details from 2017 to 2021. We are tasked with finding the increase or decrease in population from 2020 to 2021.
Step 2: Using the total population formula.
The total population in any given year can be calculated as:
\[
\text{Total} = \text{Men} + \text{Women} + \text{Children}
\]
For 2020, the total population would be:
\[
\text{Total population for 2020} = 69395 + 21560 + \text{Children in 2020}
\]
Similarly, for 2021, the total population would be:
\[
\text{Total population for 2021} = 71274 + 65935 + 23789
\]
After performing the calculations, we find the increase in population from 2020 to 2021 to be \(12413\).
Step 3: Conclusion.
Therefore, the increase in population from 2020 to 2021 is \(12413\), so the correct answer is (B).