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GRE数学真题
If it were discovered that the value of imports shown for 2007 was incorrect and...
Question 14
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If it were discovered that the value of imports shown for 2007 was incorrect and should have been $5 billion instead, then the average (arithmetic mean) value of imports per year for the 10 years shown would have been approximately how much less?
A.$200 million
B.$50 million
C.$20 million
D.$7 million
E.$5 million
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