Understanding Population Data by Age Group 

This problem asks us to use the provided table showing population distribution by age group to find the approximate number of people below the age of 35 out of a total population of 50,000.

Analyzing the Provided Population Table

The table gives the percentage of the total population within specific age brackets:

We are interested in the population below the age of 35. This includes the following age groups:

• 0-15 years
• 15-25 years
• 25-35 years

Calculating the Total Percentage Below 35 Years

To find the total percentage of the population below 35 years, we need to sum the percentages for these age groups:

Percentage below 35 years = Percentage (0-15) + Percentage (15-25) + Percentage (25-35)

Let's add the values from the table:

Percentage below 35 years = $\text{31\%} + \text{5.25\%} + \text{14.25\%}$

Summing these values:

$\text{31} + \text{5.25} = \text{36.25}$

$\text{36.25} + \text{14.25} = \text{50.50}$

So, the total percentage of the population below 35 years is 50.5%.

Calculating the Number of Persons Below 35 Years

We are given a total population of 50,000 people. To find the number of persons below 35 years, we use the calculated percentage:

Number of persons below 35 years = Total population × (Percentage below 35 years / 100)

Number of persons below 35 years = $\text{50,000} \times \frac{\text{50.5}}{\text{100}}$

Number of persons below 35 years = $\text{50,000} \times \text{0.505}$

Now, let's perform the multiplication:

$\text{50000} \times \text{0.505} = \text{25250}$

The approximate number of persons below the age of 35 is 25,250.

Conclusion on Population Calculation

Based on the population data provided in the age group table, the calculated number of persons below 35 years out of a total population of 50,000 is 25,250.

Revision Table: Population Data Analysis

Additional Information: Working with Population Percentages

When working with population percentage data, it's important to understand that these percentages represent proportions of the total population. To find the actual number of people in a specific group, you multiply the total population by the percentage (expressed as a decimal).

For example, if a country has a total population of 1 million and 10% are aged 65 and above, the number of people in that age group is:

Number = $\text{1,000,000} \times \frac{\text{10}}{\text{100}} = \text{1,000,000} \times \text{0.10} = \text{100,000}$

Similarly, to find the percentage of a group comprising multiple sub-groups, you simply add the percentages of those sub-groups, assuming they are mutually exclusive (which age groups usually are).

Always ensure the sum of all group percentages equals 100% (or very close to it due to rounding) to confirm the data covers the entire population.