Epidemiology help!! please please

1973- 2million population (starting number)
1993- 4million (increased by 2 million in 20 years)
2013- 8million (increased by 4 million in 20 years)
Death rate: 9/1000 per year (1973-2013)
Birth rate is constant.
Birth rate during period of 1973-2013 is ????

Question

Epidemiology help!! please please

1973- 2million population (starting number)
1993- 4million (increased by 2 million in 20 years) 
2013- 8million (increased by 4 million in 20 years)
Death rate: 9/1000 per year (1973-2013)
Birth rate is constant.
Birth rate during period of 1973-2013 is ????

praetorian.10 · Answer

its 6.67 but is that like a percentage or what

anonymous · Answer

no I need birth rate as a number per 1000 people.

anonymous · Answer

and how did u get that number?

praetorian.10 · Answer

20 + 20 = 40 and 40 / 6 = 6.66666666666

praetorian.10 · Answer

40 = years and 6 = million population growth

praetorian.10 · Answer

then you just factor in death echelons

praetorian.10 · Answer

i just have no idea how to conver it thats all

praetorian.10 · Answer

convert*