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题目材料：
For the 55-64 age-group in 1998, the average (arithmetic mean) number of work-hours lost per occupational injury was 48.5. If a workweek is 40 work-hours, which of the following is closets to the total number of workweeks lost due to occupational injuries in the 55-64 age-group in 1998?
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A4,500
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B5,200
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C5,500
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D5,900
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E6,300
E显示答案
