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题目内容
A survey of 300 travelers was taken at an airport. Of these travelers 90 percent were traveling on Airline A. Of those who were traveling on Airline A, 30 percent had first-class seats. Which of the following statements must be true about the 300 travelers?
Indicate all such statements.
Indicate all such statements.
A显示答案
· 相关考点
6.1.3 双重叠应用题
6.1.3 双重叠应用题
以上解析由 考满分老师提供。