Question

the population of a town increase by 10% each year for 2 year and then decreased by 10% each year for 2 year if in the beginning the population was 1,00,000 find the population after 4year​

Answer 1

Answer:

:  We can directly go for the compound interest and depreciation formula.

Initially, the population of the town is P = 100000

For the next two years, the population increased by 10% each year.

The population after 2 years, P' = P(1+10100)2 =100000(1110)2 =121000

In the next two years, the population decreased by 1o% each year from P' to P''.

P'' =P(1−10100)2 =121000(910)2 =98010

Therefore, the population of the town after 4 years is 98,010.

I hope it helps!