The population P in any year t is such that the rate of increase in the population is proportional to the population. Then

Find the population of a city at any time t, given that the rate of increase of population is proportional to the population at that instant and that in a period of 40 years the population increased from 3,00,000 to 4,00,000.

Find the population of a city at any time t,given that the rate of increase of population is proportional to the population at that instant and that in a period of 40 years the population increased 30,000 to 40,000.

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.

The population of a country doubles in 50 years. Assuming that the rate of increase of population is proportional to the number of inhabitants, in how many years would the population becomes three times ?

The population of a village is 6250. It is found that the rate of increase in population is 8% per annum. Find the population after 2 years.

The present population of a town is P and every year the rate of increase in population is R% . What will be the total population after 2 years?