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?

Explanation

On the last day of 1998,
Population of a town = 72000
In the first year, increase =7%
In the second year, decrease =10%
Population in the last day of `2000`
`= 72000(1+7/100)(1-10/100)
= 69336`