Use the data in the table below to answer the questions that follow;
Age group No of Students in thousands
1955
1960
0 - 16
150
143
17 - 45
51
107
46 -60
29
33
above 60
15
17
(a) What is the percentage increase in the working population between 1955 - 1960? (b) Calculate the ratio dependent population to the working population in 1955. (c) Calculate the ratio of dependent population to the working population in 1960. (d) Has the dependency ratio increased or decreased between 1955 and 1960?
Explanation
(a)Total working population in 1955 = 51 + 29 = 80 Total working population in 1960 = 107 + 33 = 140 The difference in working population = 140 - 80 = 60 Percentage increase = \(\frac{60}{1}\) x 100 = 75% (b) Dependant population in 1955 0 - 16 = 150 above 60 = 15 165 Working population in 1955 = 51 + 29 = 80 Ratio of dependent population = \(\frac{165}{80} = \frac{33}{16}\) = 33:16 (c) Dependant population in 1960 0 - 16 = 143 above 60 = 17 160 Working population in 1960 = 107 + 33 = 140 Ratio of dependant population = \(\frac{160}{140} = \frac{8}{7}\) = 8:7 (d) Dependency ratio decreased between 1955 and 1960.
