Question

If the present population of a town is X and it decreases at the rate of Y% per annum, find the population after Z years.​

Answer 1

Answer:

This will be negative compound interest.

so

so population after z years will be

x ( 1 - (y/100))^z

Step-by-step explanation:

let x = 100

y = 10 %

z= 2 years

Then after 2 years population will be

100 ( 1- (10/100)) ^ 2

100( 0.9)^2

100 * 0.81

81