Our worldAges 16-18

Demographic dependency ratios

Calculate the demographic dependency ratio from young dependants, elderly dependants and the working-age population. Review suitability for your learners before teaching.

New variation Try interactive challenge Browse templates

Age band:Ages 13-15 Ages 16-18

Choose “Save as PDF” to keep a copy. Use your browser’s paper setting for A4 or Letter.

Worksheet StudioPractice pack · Ages 16-18

Demographic dependency ratios

Take your time. Show your thinking.

1. In a town, there are 20 young dependants (under 15), 12 elderly dependants (65 and over), and 100 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
20 · 15 · 12 · 65 · Demographic dependency rat…
2. In a town, there are 205 young dependants (under 15), 45 elderly dependants (65 and over), and 500 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
205 · 15 · 45 · 65 · Demographic dependency rat…
3. In a town, there are 328 young dependants (under 15), 128 elderly dependants (65 and over), and 800 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
328 · 15 · 128 · 65 · Demographic dependency rat…
4. In a town, there are 200 young dependants (under 15), 200 elderly dependants (65 and over), and 1000 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
200 · 15 · 200 · 65 · Demographic dependency rat…
5. In a town, there are 252 young dependants (under 15), 270 elderly dependants (65 and over), and 900 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
252 · 15 · 270 · 65 · Demographic dependency rat…
6. In a town, there are 22 young dependants (under 15), 11 elderly dependants (65 and over), and 100 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
22 · 15 · 11 · 65 · Demographic dependency rat…
7. In a town, there are 31 young dependants (under 15), 28 elderly dependants (65 and over), and 100 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
31 · 15 · 28 · 65 · Demographic dependency rat…
8. In a town, there are 129 young dependants (under 15), 57 elderly dependants (65 and over), and 300 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
129 · 15 · 57 · 65 · Demographic dependency rat…
9. In a town, there are 234 young dependants (under 15), 126 elderly dependants (65 and over), and 900 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
234 · 15 · 126 · 65 · Demographic dependency rat…
10. In a town, there are 128 young dependants (under 15), 32 elderly dependants (65 and over), and 400 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
128 · 15 · 32 · 65 · Demographic dependency rat…
11. In a town, there are 252 young dependants (under 15), 126 elderly dependants (65 and over), and 700 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
252 · 15 · 126 · 65 · Demographic dependency rat…
12. In a town, there are 76 young dependants (under 15), 92 elderly dependants (65 and over), and 400 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
76 · 15 · 92 · 65 · Demographic dependency rat…

12 questions · Seed 45 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 16-18

Demographic dependency ratios

Answers and reasoning. Review before teaching.

1. In a town, there are 20 young dependants (under 15), 12 elderly dependants (65 and over), and 100 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
32
Total dependants = 20 + 12 = 32. Dependency ratio = (32 ÷ 100) × 100 = 32.
2. In a town, there are 205 young dependants (under 15), 45 elderly dependants (65 and over), and 500 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
50
Total dependants = 205 + 45 = 250. Dependency ratio = (250 ÷ 500) × 100 = 50.
3. In a town, there are 328 young dependants (under 15), 128 elderly dependants (65 and over), and 800 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
57
Total dependants = 328 + 128 = 456. Dependency ratio = (456 ÷ 800) × 100 = 57.
4. In a town, there are 200 young dependants (under 15), 200 elderly dependants (65 and over), and 1000 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
40
Total dependants = 200 + 200 = 400. Dependency ratio = (400 ÷ 1000) × 100 = 40.
5. In a town, there are 252 young dependants (under 15), 270 elderly dependants (65 and over), and 900 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
58
Total dependants = 252 + 270 = 522. Dependency ratio = (522 ÷ 900) × 100 = 58.
6. In a town, there are 22 young dependants (under 15), 11 elderly dependants (65 and over), and 100 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
33
Total dependants = 22 + 11 = 33. Dependency ratio = (33 ÷ 100) × 100 = 33.
7. In a town, there are 31 young dependants (under 15), 28 elderly dependants (65 and over), and 100 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
59
Total dependants = 31 + 28 = 59. Dependency ratio = (59 ÷ 100) × 100 = 59.
8. In a town, there are 129 young dependants (under 15), 57 elderly dependants (65 and over), and 300 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
62
Total dependants = 129 + 57 = 186. Dependency ratio = (186 ÷ 300) × 100 = 62.
9. In a town, there are 234 young dependants (under 15), 126 elderly dependants (65 and over), and 900 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
40
Total dependants = 234 + 126 = 360. Dependency ratio = (360 ÷ 900) × 100 = 40.
10. In a town, there are 128 young dependants (under 15), 32 elderly dependants (65 and over), and 400 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
40
Total dependants = 128 + 32 = 160. Dependency ratio = (160 ÷ 400) × 100 = 40.
11. In a town, there are 252 young dependants (under 15), 126 elderly dependants (65 and over), and 700 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
54
Total dependants = 252 + 126 = 378. Dependency ratio = (378 ÷ 700) × 100 = 54.
12. In a town, there are 76 young dependants (under 15), 92 elderly dependants (65 and over), and 400 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
42
Total dependants = 76 + 92 = 168. Dependency ratio = (168 ÷ 400) × 100 = 42.

12 questions · Seed 45 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 16-18

Demographic dependency ratios

Take your time. Show your thinking.

1. In a town, there are 20 young dependants (under 15), 12 elderly dependants (65 and over), and 100 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
20 · 15 · 12 · 65 · Demographic dependency rat…
2. In a town, there are 205 young dependants (under 15), 45 elderly dependants (65 and over), and 500 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
205 · 15 · 45 · 65 · Demographic dependency rat…
3. In a town, there are 328 young dependants (under 15), 128 elderly dependants (65 and over), and 800 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
328 · 15 · 128 · 65 · Demographic dependency rat…
4. In a town, there are 200 young dependants (under 15), 200 elderly dependants (65 and over), and 1000 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
200 · 15 · 200 · 65 · Demographic dependency rat…
5. In a town, there are 252 young dependants (under 15), 270 elderly dependants (65 and over), and 900 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
252 · 15 · 270 · 65 · Demographic dependency rat…
6. In a town, there are 22 young dependants (under 15), 11 elderly dependants (65 and over), and 100 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
22 · 15 · 11 · 65 · Demographic dependency rat…
7. In a town, there are 31 young dependants (under 15), 28 elderly dependants (65 and over), and 100 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
31 · 15 · 28 · 65 · Demographic dependency rat…
8. In a town, there are 129 young dependants (under 15), 57 elderly dependants (65 and over), and 300 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
129 · 15 · 57 · 65 · Demographic dependency rat…
9. In a town, there are 234 young dependants (under 15), 126 elderly dependants (65 and over), and 900 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
234 · 15 · 126 · 65 · Demographic dependency rat…
10. In a town, there are 128 young dependants (under 15), 32 elderly dependants (65 and over), and 400 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
128 · 15 · 32 · 65 · Demographic dependency rat…
11. In a town, there are 252 young dependants (under 15), 126 elderly dependants (65 and over), and 700 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
252 · 15 · 126 · 65 · Demographic dependency rat…
12. In a town, there are 76 young dependants (under 15), 92 elderly dependants (65 and over), and 400 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
76 · 15 · 92 · 65 · Demographic dependency rat…

12 questions · Seed 45 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 16-18

Demographic dependency ratios

Answers and reasoning. Review before teaching.

1. In a town, there are 20 young dependants (under 15), 12 elderly dependants (65 and over), and 100 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
32
Total dependants = 20 + 12 = 32. Dependency ratio = (32 ÷ 100) × 100 = 32.
2. In a town, there are 205 young dependants (under 15), 45 elderly dependants (65 and over), and 500 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
50
Total dependants = 205 + 45 = 250. Dependency ratio = (250 ÷ 500) × 100 = 50.
3. In a town, there are 328 young dependants (under 15), 128 elderly dependants (65 and over), and 800 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
57
Total dependants = 328 + 128 = 456. Dependency ratio = (456 ÷ 800) × 100 = 57.
4. In a town, there are 200 young dependants (under 15), 200 elderly dependants (65 and over), and 1000 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
40
Total dependants = 200 + 200 = 400. Dependency ratio = (400 ÷ 1000) × 100 = 40.
5. In a town, there are 252 young dependants (under 15), 270 elderly dependants (65 and over), and 900 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
58
Total dependants = 252 + 270 = 522. Dependency ratio = (522 ÷ 900) × 100 = 58.
6. In a town, there are 22 young dependants (under 15), 11 elderly dependants (65 and over), and 100 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
33
Total dependants = 22 + 11 = 33. Dependency ratio = (33 ÷ 100) × 100 = 33.
7. In a town, there are 31 young dependants (under 15), 28 elderly dependants (65 and over), and 100 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
59
Total dependants = 31 + 28 = 59. Dependency ratio = (59 ÷ 100) × 100 = 59.
8. In a town, there are 129 young dependants (under 15), 57 elderly dependants (65 and over), and 300 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
62
Total dependants = 129 + 57 = 186. Dependency ratio = (186 ÷ 300) × 100 = 62.
9. In a town, there are 234 young dependants (under 15), 126 elderly dependants (65 and over), and 900 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
40
Total dependants = 234 + 126 = 360. Dependency ratio = (360 ÷ 900) × 100 = 40.
10. In a town, there are 128 young dependants (under 15), 32 elderly dependants (65 and over), and 400 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
40
Total dependants = 128 + 32 = 160. Dependency ratio = (160 ÷ 400) × 100 = 40.
11. In a town, there are 252 young dependants (under 15), 126 elderly dependants (65 and over), and 700 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
54
Total dependants = 252 + 126 = 378. Dependency ratio = (378 ÷ 700) × 100 = 54.
12. In a town, there are 76 young dependants (under 15), 92 elderly dependants (65 and over), and 400 working-age residents (15–64). Calculate the total dependency ratio (dependants per 100 working-age people).
42
Total dependants = 76 + 92 = 168. Dependency ratio = (168 ÷ 400) × 100 = 42.

12 questions · Seed 45 · Age guidance, not curriculum certification