Q5
Out of the world population of approximately 6.6 billion, 1.2 billion people live in the richer countries of Europe, North America, Japan and Oceania and is growing at the rate of 0.25% per year, while other 5.4 billion people live in the less developed countries and is growing at the rate of 1.5%. What will be the world population in billions in 5 years if we assume that these rates of increase will stay constant for the next 5 years. (round answer to 3 significant digits)