The table below shows the percentage age distribution of population of country Y in 2010. The population was 200,000. Use the information in the table to answer the questions that follow.
| Age group (year) | 0 – 18 | 19 – 40 | 41 – 60 | 60 and above |
| percentage distribution pf population | 30% | 35% | 25% | 10% |
(a) Calculate the size of the
i. working population
ii. dependent population
(b) If the population (0 -18) years is increased by 2% and 0.5% of the ages 61 years and above have died, what is the natural increase in the population.
(c) How will you describe the age distribution of the population? Give a reason for your answer..
Explanation
(a)i. The size of the working population is;
= population of age group (19 - 40) + population of age group (41 - 60)
= 35% + 25% = 60%
= \(\frac{60}{100} \times \frac{200,000}{1}\) = 120,000
OR
35% of 200,000 = 70,000
25% of 200,000 = 50,000
70,000 + 50,000 = 120,000
(ii) The size of the dependent population = population of age group (0 - 18) + age group (61 and above)
= 30% + 10% = 40%
= \(\frac{40}{100} \times \frac{200,000}{1}\) = 80,000
OR
30% of 200,000 = 60,000
10% of 200, 000 = 20,000
60,000 + 20,000 = 80,000
(b) Percentage of population of age group (0 - 18) = 30%
\(\frac{30}{100} \times \frac{200,000}{1}\) = 60,000
\(\frac{2}{100} \times \frac{60,000}{1}\) = 1,200
Percentage population of age group (61 and above) = 10%
\(\frac{10}{100} \times \frac{200,000}{1}\) = 20,000
\(\frac{0.5}{100} \times \frac{20,000}{1}\) = 100
Natural increase in the population
= Births - Deaths
= 1,200 - 100 = 1,100
(c) The population is growing / a youthful one. This is because the population of the youth is more tha of the aged