The population of a town increases at the rate of 50 per thousand. Its

1.	The population of a town increases at the rate of 50 per thousand. Its population after 2 years will be 22050. Find its present population.
Answer» Given details are, Growth rate of population of town is = 50/1000×100 = 5% Population after 2 years is = 22050 So, let present population of town be = x By using the formula, A = P (1 + R/100) 22050 = x (1 + 5/100) (1 + 5/100) 22050 = x (105/100) (105/100) 22050 = x (1.05) (1.05) 22050 = 1.1025x x = 22050/1.1025 = 20000 ∴ Present population of the town is 20000.

The population of a town increases at the rate of 50 per thousand. Its population after 2 years will be 22050. Find its present population.

Answer»

Given details are,

Growth rate of population of town is = 50/1000×100 = 5%

Population after 2 years is = 22050

So, let present population of town be = x

By using the formula,

A = P (1 + R/100)

22050 = x (1 + 5/100) (1 + 5/100)

22050 = x (105/100) (105/100)

22050 = x (1.05) (1.05)

22050 = 1.1025x

x = 22050/1.1025

= 20000

∴ Present population of the town is 20000.