The population of a certain species of insects is `x` now. It becomes `y` times itself after one week. What will be its population after 2 weeks?

The number of bacteria in a culture is x now. It becomes square of itself after one week. What will be its number after two weeks?

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 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?

Rohan spends Rs. x daily and saves Rs. y per week. What is his income after 3 weeks?

The population of a town increases by 10% annually. If the present population is 60000, what will be its population after 2 years?

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.

A population of bacteria doubles every 2 hours . What is the percent increase after 4 hours ?

The population of an insect species shows and explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show ?

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.

A population of bacteria doubles every 2 hours. What is the percent increase after 4 hours ?