The population of a certain is known to increase at a rate proportional to the number of people presently living in the country. If after two years the population has doubled, and after three years the population is 20,000 estimates the number of people initially living in the country.

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 a town is increasing at the rate of 5% per annum. What will be the population of the town on this basis after two years, if the present population is 16000?

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?

The population of a city was 20,000 in the year 1997. It increased at the rate of 5% p.a. Find the population at the end of the year 2000.

The population of a town increases at the rate of 40 per thousand annually. If the present population be 175760, what was the population three years ago.

The population of a city increased by 10% in the previous year. If the present population is 1,32,000, what was the population of the city a year ago?

The population of a town increases by 20% in each year starting 2010. If the total population of the two in 2013 is 77940, what was the population of the town is 2010?

The present population of a town is 28000. If it increases at the rate of 5% per annum, what will be its population after 2 years?

The rate of increase in the number of bacteria in a certain bacteria culture is proportional to the number present. Given the number triples in 5 hrs., find how many bacteria will be present after 10 hours. Also find the time necessary for the number of bacteria to be 10 times the number of initial present. [Given log_e3=1. 0986 ,\ e^(2. 1972)=9 ]

The population of a town increases at the rate of 50 per thousand. Its population after 2 years will be 22050. Find its present population.