Question

the population of a city increases 20% annually. if the present population is 24600. find the population a year ago

Answer 1

Let the population a year ago be x.
Therefore,
Population this year=
24600=x+20% of x
24600=x+20x/100                     
24600=120x/100
24600*10/12=x
2050*10=x
x=20500

Answer 2

Refer to attachment for your answer....