In a bank, principal increases continuously at the rate of 5% per year. In how many years Rs 1000 double itself?

In a bank, principal increases continuously at the rate of r% per year. Find the value of r if Rs 100 double itself in 10 years.

In a bank, principal increases continuously at the rate of 5% per year. An amount of Rs 1000 is deposited with this bank, how much will it worth after 10 years.

A country has a food deficit of 10%. Its population grows continuously at the rate of 3% per year. Its annual food production every year is 4% more than that of the last year Assuming that the average food requirement per person remains constant, prove that the country will become self-sufficient in food after n years, where n is the smallest integer bigger than or equal to (log_e 10-log_e 9)/((log_e 1.04)-0.03)

A population grows at the rate of 2.5% per annum. How long does it take for the population to double?

You have Rs.2,400 in your account and the interest rate is 5%. After how many years would you earn Rs.240 as interest.

The population of a place increased to 54,000 in 2003 at a rate of 5% per annum : what would be its population in 2005?

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.

Aman deposited Rs 10000 in a bank at the rate of 5% simple interest annually. Find the amount in 15th year since he deposited the amount and also calculate the total amount after 20 years.