In 2005, the wealthiest 20 percent of the population received 50 percent of the total US income.The poorest 20 percent received

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The question states that the wealthiest 20 percent received 50 percent of the total US income. This means that the remaining 80 percent of the population received the other 50 percent. If we divide that 50 percent by 4 (since there are 4 groups of 20 percent each), we get 12.5 percent. Therefore, the poorest 20 percent received less than 12.5 percent, which rules out choices B, C, and D. The only option left is A, which states that the poorest 20 percent received 3 percent of the total US income.

In 2005, the Wealthiest 20 Percent of the Population Received