In 2002 there was estimated to be 6billon people on earth. 20 percent of people lived on less than a 1$ a day. how many people lived on less a dollar a day?

Hiya!

So, 6 billion is 100%. 50% is 3 billion. 25% is 1.5 billion. 20% must be 1.2 billion because 1.2 × 5 is 6. I know that 20% is 1/5 of 100%, and that's how I got my answer.

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