SOLUTION: the world population is projected to be 6.6 billion 2040.at that time there are expected to be approximately 2 billion more people in Asia than in Africa the population for the res

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: the world population is projected to be 6.6 billion 2040.at that time there are expected to be approximately 2 billion more people in Asia than in Africa the population for the res      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 762733: the world population is projected to be 6.6 billion 2040.at that time there are expected to be approximately 2 billion more people in Asia than in Africa the population for the rest of the world will be approximately 0.1 billion more than half the population of Asia find the projected population of Asia Africa and the rest of the world in 2040.please help
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
the world population is projected to be 6.6 billion 2040.
at that time there are expected to be approximately 2 billion more people in Asia than in Africa
As = Af + 2
------------------------
the population for the rest of the world will be approximately 0.1 billion more than half the population of Asia
W' = (1/2)As + 0.1
---------------------------
find the projected population of Asia Africa and the rest of the world in 2040.please
================
As + Af + W' = 6.6
As + (As-2) + (1/2)As + 0.1 = 6.6
------
(5/2)As - 1.9 = 6.6
(5/2)As = 8.5
Asia = 3.4 billion
Africa = As-2 = 1.4 billion
Rest of world = (1/2)As + 0.1 = 1.7+0.1 = 1.8 billion
==================
Cheers,
Stan H.