Forbes: Top 10 richest people in the world

Updated: 2014-03-04 11:26

(chinadaily.com.cn)

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No. 6 and No. 7

Charles Koch

Net Worth: $40 billion

Source of wealth: diversified

David Koch

Net Worth: $40 billion

Source of wealth: diversified

Forbes: Top 10 richest people in the world

Charles Koch (L) and David Koch (R) ranking the sixth and seventh on the list are the richest siblings in the world, thanks to their oil and chemical refining empire. [Photo/Xinhua]