List of top Mathematics Questions on Population Growth Calculation

Population of Town A and B was 20,000 in 1985. In 1989, the population of Town A was 25,000, and Town B had 28,000. What will be the difference in population between the two towns in 1993?
In a culture, the bacteria count is 1,00,000 initially. The number increases by 10% in the first 2 hours. In how many hours will the count reach 2,00,000, if the rate of growth of bacteria is proportional to the number present?
The rate of increase of population of a city is proportional to population present. In 40 years it increased from 30,000 to 40,000. At time $t$ population is $a(b)^{t/40}$. Then $a$ and $b$ are \dots}
The money invested in a company is compounded continuously. If Rs. 400 invested today becomes Rs. 800 in 6 years, then at the end of 30 years, it will become (in Rs.) ______.
Population of towns A and B increases at a rate proportional to population. In 1984, both were 20,000. In 1989, A was 25,000 and B was 28,000. The difference in 1994 was
The area enclosed between the curves \( y^2 = 4x \) and \( y = |x| \) is
The money invested in a company is compounded continuously. Rs. 400 invested today becomes Rs. 800 in 6 years, then at the end of 33 years, it will become .. ($\sqrt{2} = 1.4142$)
The population increases from \(40000\) to \(80000\) in \(20\) years, then the population in another \(40\) years will be
The area enclosed between the curves \( y^2 = 4x \) and \( y = |x| \) is