The world population is

Question

The world population is projected to be seven.7 billion in 2045 at the time they are expected to be approximately 2 million more people in Asia than in Africa the population for the rest of the world will be approximately 0.2 billion more than half of the population of Asia find the projected populations of Asia Africa and the rest of the world in 2045?

Answer 1

Hi there! Great question. Let me try to help you out...

First off, we know the total world population will be 7.7 billion, so when we add up all the populations this will be our total. Now, let's say that Asia's population will be "x". The following will be the population of the other continents listed:

Asia = x

Africa = x - .002

Rest of World = (.5)x + .2

Now we add them up and set them equal to 7.7 billion to solve for x:

x + (x - .002) + [(.5)x + .2] = 7.7

2.5x +0.198 = 7.7

2.5x = 7.502

x = 3.008

So now we can plug 3.008 in for x to find the populations:

Asia = 3.008

Africa = 3.008 - .002 = 3.006

Rest of the World = (.5)(3.008) + 2 = 3.504