The population of the city was 20000 in the year 1997 it increases at the rate of 5% per annum find the population at the end of the Year 2000.
The population of a certain city was 72000 on the last day of the year 1998. During next year it increased by 7% but due to an epidemic it decreased by 10% in the following year. What was its population at the end of the year 2000?