Question

At present the population of a town is 80000. at what growth rate of population will it be 88200 in 2 years?? Find rate ​

Answer 1

rate ( R) = 5%

Step-by-step explanation:

present the population of a town pt = 88200.

population (p) = 80000

time (T) = 2years

rate (R) = ?

we know,

pt = p(1+R\100)^T

88200

= 80000(1+R\100)^2

88200\80000 = (1+R\100)^2

1.1025 = (1+R\100)^2

(1.05)^2= (1+R\100)^2

1.05 = 1+R\100

1.05 - 1 = R\100

:. R = 0.05 x100 = 5%

so rate ( R) = 5%