If there are 22 million people below 36 years, then the number of people (in…

Concept: In a data-interpretation table where percentages are given for several categories and the absolute value corresponding to one combined percentage is stated, the value of 1% of the total can be found by dividing that absolute value by the percentage it represents; multiplying this per-percent value by any other category's percentage then gives that category's absolute size.

Application:

1. The age groups below 36 years are "Up to 15" (20.00%), "16 - 25" (18.25%) and "26 - 35" (16.75%).

2. Add these three percentages: 20.00 + 18.25 + 16.75 = 55%.

3. This combined 55% of the total population corresponds to the given 22 million people.

4. So the value of 1% of the total population = 22 / 55 = 0.4 million.

5. The age group (56 - 65) accounts for 12.50% of the population, so its size = 12.50 × 0.4 = 5 million.

Cross-check: Multiplying the per-percent value back into the original 55% gives 0.4 × 55 = 22 million, which matches the value stated in the question, confirming the per-percent value is correct.

Hence, the age group (56 - 65) has 5 million people.