Problema Solution
the population of a town increased by 10% annually.if the present population is 22000.find its population a year ago.
Answer provided by our tutors
let 'x' represent the population a year ago
x + 0.10x = 22000
x(1 + 0.10) = 22000
x*1.10 = 22000 divide both sides by 1.10
x = 22000/1.10
x = 20,000
the population was 20,000 one year ago.