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题目材料:

Total number of commuters in Country S in June 2016: 8 million
For commuters who used car pools as their primary mode of transportation, the average (arithmetic mean) number of commuters per car pool vehicle was 2.5. Which of the following is closest to the total number of car pool vehicles for these commuters?
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A.0.02 million
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B.0.13 million
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C.0.32 million
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D.0.80 million
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E.1.20 million
B显示答案