The population of a country increases at a rate proportional to the number of inhabitants. `f` is the population which doubles in 30 years, then the population will triple in approximately. (a) 30 years (b) 45 years (c) 48 years (d) 54 years

The population of country increases at the rate proportional to the number of inhabitants. If the population doubles in 30 years, in how many years will it treble? Given log_(e)3=1.6log_(e)2 .

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 city increases by 5% per annum. If the present population of a city be 370440 then what was its population before 3 years?

If the rate of increase of population is 5% per year, then in how many years the population will be doubled?

If the rate of increase of population is 5% per year, then in how many years the population will be doubled?

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?

The population of a village increase by r% each year. If P be the population after n years, then population n years ago was

The present population of a city is 26250. If the population increases at the rate of 4% every year, then let's find what will the population of the city be next year. Also, let's find what the population will be after two years.

The population of a village increases continuously at the rate proportional to the number of its inhabitants present at any time.If the population of the village was 20,000 in 1999 and 25000 in the year 2004, what will be the population of the village in 2009?