SOLUTION: The world's most populous countries are China and India. As of mid-2005, the combined population of these two countries was estimated at 2.4 billion. If there were about 4/5 as man

Question 121513: The world's most populous countries are China and India. As of mid-2005, the combined population of these two countries was estimated at 2.4 billion. If there were about 4/5 as many poeple living in India as China, what was the population of each country, to the nearest tenth of a billion?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
1. China (C) plus India (I) equals 2.4 (billion).
2. India is 4/5 of China in population.
Substitute 2 into 1.

Rounding to the nearest tenth of a billion,

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