The population of a city is 225000. If the annual birth rate and death rates are 4.5% and 2.5%, respectively, calculate the
increase in the population of the city after 2 years.
This questions was previously asked in
SSC CHSL 7th June 2022 Shift-1
Explanation:
- To calculate the increase, first find the population at the end of one year by accounting for both birth and death rates.
- Initial population: 225,000
- Birth rate: 4.5% of 225,000 = 10,125
- Death rate: 2.5% of 225,000 = 5,625
- Net population increase in 1 year: 10,125 - 5,625 = 4,500
- Repeat the calculation for the second year.
- New population after 1 year: 225,000 + 4,500 = 229,500
- Births in second year: 4.5% of 229,500 = 10,327.5
- Deaths in second year: 2.5% of 229,500 = 5,737.5
- Net increase in second year: 10,327.5 - 5,737.5 = 4,590
- Total population increase after 2 years: 4,500 + 4,590 = 9,090
- Correct Option: 2, 9090
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