Question

The population of a town increase 10%annually. If the present population is 60,500,what was the population 2years ago

Answer 1

present population of town = 60500
population increase every year = 10%
population before 1 year = 10% of 60500
=> 10/100×60500
=> 10×605
=> 6050
New number of population = 60500-6050
=> 54450
population before 2 years = 10% of 54450
=> 10/100×54450
=> 5445
New number of population = 54450-5445
=> 49005
hence the population before 2 years is 49005.