Question

present population is 10,000..it increases by 10% during the 1st year and decrease 10%during 2nd year.find the population after 2 years

Answer 1

Present population = 10000
Population after 1st year = 10000 + 10% of 10000 = 10000 + 1000 =11000
Population after 2 years = 11000 - 10% of 11000 = 11000 - 1100 = 9900