Question

population of our country as per 2011 census is about 120,00,00,000. if the population of our country increases by3% every year what will be the population by 2012?

Answer 1

In 2011, population  = 120,00,00,000
In 1 year, it will increase by 3%
3% of 120,00,00,000 = 3/100 × 120,00,00,000 = 3,60,00,000

in 2012, population = 120,00,00,000 + 3,60,00,000 = 123,60,00,000