Question

The present population of a town is 80000. If the population increases 2% by birth and3% by migration . What will be the population of town after 2years ?

Answer 1

Answer:

present population = 80000

80000(1+2/100) ×(1+3/100)

80000×51/50×103/100

16×51×103

=84048

Answer 2

Answer:

1,02,050

Step-by-step explanation:

formula = V=Vo(1+r/100)^n

where,

V is population after given time

Vo is present population

r is rate at which population is increasing

n is time

So, according to question rate is 2% + 3%( increase by birth and increase by migration respectively) it will be 5%

then,

population after 2 yrs=

V = 80000(1+5/100)^2

=80000×105/100×105/100

=8×105×105=22050

population after 2 yrs = 80000+22050

= 1,02,050