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The annual birth and death rates per 1000 are 39.4 and 19.4 respectively. The number of years in which the population will be doubled assuming there is no immigration or emigration is (a) 35 years (b) 30 years (c) 25 years (d) none of these
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The annual birth and death rates per 1000 are 39.4 and 19.4 respective...
Population Growth Calculation:
- The natural increase in population per year can be calculated by subtracting the death rate from the birth rate: 39.4 - 19.4 = 20.
- This means that the population grows by 20 individuals per 1000 people each year.

Doubling Time Calculation:
- The formula to calculate the number of years for a population to double is:
Doubling Time = ln(2) / (ln(1 + (natural increase rate / 1000)))
- Substituting the values, Doubling Time = ln(2) / (ln(1 + (20 / 1000)))
- Doubling Time ≈ 35 years

Conclusion:
- The correct answer is (a) 35 years.
- Therefore, it will take approximately 35 years for the population to double under the given conditions of birth and death rates, assuming no immigration or emigration.
Community Answer
The annual birth and death rates per 1000 are 39.4 and 19.4 respective...
100+3.94-1.94=102its means 2% p.a2p=p(1+.02)^n2=1.02^n=35 years
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The annual birth and death rates per 1000 are 39.4 and 19.4 respectively. The number of years in which the population will be doubled assuming there is no immigration or emigration is (a) 35 years (b) 30 years (c) 25 years (d) none of these
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The annual birth and death rates per 1000 are 39.4 and 19.4 respectively. The number of years in which the population will be doubled assuming there is no immigration or emigration is (a) 35 years (b) 30 years (c) 25 years (d) none of these for Quant 2024 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about The annual birth and death rates per 1000 are 39.4 and 19.4 respectively. The number of years in which the population will be doubled assuming there is no immigration or emigration is (a) 35 years (b) 30 years (c) 25 years (d) none of these covers all topics & solutions for Quant 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The annual birth and death rates per 1000 are 39.4 and 19.4 respectively. The number of years in which the population will be doubled assuming there is no immigration or emigration is (a) 35 years (b) 30 years (c) 25 years (d) none of these.
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