The population of a village increases by 5% annually. If

The population of a village increases by 5% annually. If its present population is 4410, then its population 2 years ago was

Using Rule 17,
If the population of village two years ago be P₀ , then

P = P₀		1 +	R		^T
			100

⇒ 4410 = P₀		1 +	5		²
			100

⇒ 4410 = P₀			21		²
			20

⇒ 4410 =	441P₀
	400

⇒ P₀ =	4410 × 400	= 4000
	441