Question

the population of town is 600000 if birth rate 7.5% p.a and death rate is 4.5% p.a find the population of the town after one and a half year

Answer 1

6,27,000 people because 11.25% is the birth rate which equals 67500 people and 6.75 the total death rate which equals 40500 people ..So 67500-40500=27000
therefore population = 627500
If it's wrong then plz tell ...because I'm in class 6

Answer 2

the birth rate is 7.5%
hence, the number of people birth in year =7.5/100×600000
=45000
so, in one and half year after = 45000+22500
=67500
similarly, the number of people dead one year =4.5/100×60000
=27000
so, in one and half year =27000+1350067
=40500
the number of population if town=600000+(67500-40500)
=600000+27000
=627000.
hence, the population of town after one and half year is 672700