Which formula represents the calculation for the dependency ratio?

The dependency ratio is a measure used to assess the ratio of dependents (individuals who are typically not in the labor force) to the working-age population. This ratio includes both the young population (under 15 years) and the elderly (over 65 years) as dependents, while the working-age population is typically defined as those between the ages of 15 and 64.

The correct formula sums the percentages of the population that is considered dependent (both those under 15 and those over 65) and divides this sum by the percentage of the population that is considered the working-age group (those between 15 and 64). By multiplying by 100, the calculation is standardized to express the ratio as a percentage.

This accurately reflects the dependency ratio because it captures the total number of dependents in relation to the working-age population, which is critical for understanding the economic burden placed on those who are traditionally in the workforce.