Question

If the annual increase in population of a town be 5% and present population be 22050,what was the population 2 years ago​

Answer 1

(a) A= p(1+r/100)t

44100=p(1+5/100)2

44100=p(105/100)2

44100=p*105/100*105/100

44100*100*100=p*105*105

p=(44100*100*100)/105*105

p=40000

Then, population of a town 2 years ago is 40000.

Population after 1 year,

A=p(1+r/100)t

A=44100(1+5/100)1

A=44100*105/100

A=46,305

So, the population after 1 year is 46,305.