Patna city has a population of 96,000, the decreasing rate of population is 800 per year. The population of Pataliputra is 68,000.

City A has a population of 136000 which is decreasing at the rate of 2400 per year.City B has a population of 84000 which is increasing at the rate of 1600 per year. In how many years will the population of two cities become equal?

Village X has a population of 68000, which is decreasing at the rate of 1200 per year,Village Y has a population of 42000, which is increasing at the rate of 800 per year.In how many years will the population of the two villages be equal?

Village A has a population of 6800, which is decreasing at the rate of 120 per year. Village B has a population of 4200, which is increasing at the rate of 80 per year. In how many years will the population of the two villages will become equal ?

A population grows at the rate of 5% per year. Then the population will be doubled in :

In 2019 if there is 10% increase in population of city A and 15% decrease in the population in B as compared to that in 2018 ,then the population of city A is what percentage more /less than in B , in that year ? (correct to one decimal places)

Find the population of city at any time t given that rate of increase of population is proportional to the population at that instant & that period of 40 years the population increased from 30000 to 40000.