Question

the population of a city is estimated to be a 432000 after 2 years. if the population growth is 20% per annum,what is the current population?​

Answer 1

Answer:

The  exponential increasing function is given by

Where a is the initial value , r is the rate of interest in the decimal form and t is the time in years .

As given

The population of a town increases by 20 % every year.

if its present population is 432000 .

a = 432000

20% is written in the decimal from .

= 0.20

r = 0.20

t = 2 years

Putting all the values in the exponential function .

y = 432000 × 1.44

y = 622080

Therefore the population after 2 years be 622080 .

Answer 2

Answer:300000

Step-by-step explanation:

successive change formula-20+20+400/100=44%