Answer:
Explanation:
The increase in population over 5 years is:
21000 - 16000 = 5000
From the given information, we know that this increase is due to both natural increase (births minus deaths) and net migration. Since the problem only provides information about the total increase and not the individual components, we'll assume that the entire increase is due to natural increase and net migration combined. Therefore, the average annual increase in population over 5 years is:
5000/5 = 1000
This includes both natural increase and net migration. Since we know that the natural increase is 1500 people per year, we can calculate the net migration rate as:
Net migration rate = (average annual increase) - (natural increase)
Net migration rate = 1000 - 1500
Net migration rate = -500
The negative sign indicates that there is net out-migration (more people leaving the township than moving in) over the 5-year period.
To calculate the overall rate of population increase (including both natural increase and net migration), we divide the average annual increase by the base population:
Overall rate of population increase = (average annual increase) / (base population)
Overall rate of population increase = 1000 / 16000
Overall rate of population increase = 0.0625 or 6.25%
Therefore, the population of the Asokwa township is increasing at a rate of 6.25% per year due to both natural increase and net migration.