What is the average income (in dollars) of a household with 4 members if the first member earns $40,000, the second earns $50,000, the third earns $60,000, and the fourth earns $70,000?
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Math question: What is the median of the following data set: 12, 15, 18, 22, 24, 30?
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What is the area of a triangle with base 10 and height 8?