Question

present population of city is 3,02,500.if the population increase by 10% every year, what was the population of the city two years ago?

Answer 1

Formula, A=p (1 +r÷100)n

A=3,02,500

r=10%increases

T=2year before

P=!

3,02,500=p (1+10÷100)2

3,02,500=p (1+1÷10)2

3,02,500=p (11÷10)2

p (11÷10)2=3,02,500

p=3,02,500×10÷11×10÷11

p=250000