Suppose that the five residents of a small village have the following incomes: $10,000; $20,000; $30,000; $40,000; $50,000. The proportion of total income earned by the lowest two quintiles is _____, and the proportion earned by the highest two quintiles is _____.

Question

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The total income of the village is $150,000. The lowest two quintiles (40% of the population, which is 2 out of 5 people) earn $10,000 and $20,000, totaling $30,000, which is 20% of the total income ($30,000 / $150,000). The highest two quintiles (also 2 out of 5 people) earn $40,000 and $50,000, totaling $90,000, which is 60% of the total income ($90,000 / $150,000).

Suppose That the Five Residents of a Small Village Have