Bill and Melinda Gates say it's unfair that they have so much wealth
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Bill and Melinda Gates say it's unfair that they have so much wealth
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Bill and Melinda Gates say it's unfair that they have so much wealth

In their 10th Annual Letter, power couple Bill and Melinda Gates answer one of the 10 toughest questions they get asked.
01:06
Tue, Feb 13 201812:48 PM EST