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题目材料：
In 1987 there were $$630,000$$ students enrolled in college in Country $$U$$ who were in the age-group $$35$$ and older. Which of the following is closest to the percent increase from 1987 to 2007 in the number of students enrolled in college in Country $$U$$ who were in the
age-group $$35$$ and older?
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A.7%
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B.19%
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C.31%
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D.44%
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E.52%
C显示答案
