The population of a village is 20,000. If the annual birth rate is 9% and the annual death rate 4%, calculate the population after two years
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Answer:
Step-by-step explanation:
ormula : 1 Mark
Application : 1 Mark
Calculation : 2 Marks
We have,
Annual birth rate
=
4
%
, Annual death rate
=
2
%
∴
Annual growth
=
(
4
−
2
)
%
=
2
%
Thus, we have
P = Initial population = 20000, R = Rate of growth
=
2
%
per annum, n = 2 years
∴
Population after 2 years
=
P
(
1
+
R
100
)
n
=
20000
×
(
1
+
2
100
)
2
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