GRE Problem Solving Question 1098
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Source: Other
For any Company X listed in the chart above, let ?X be defined as the difference between the mean annual donation of employees of Company X in the period 1980–1990 and that for the same company in the period 1980–2000. Which of the following is closest to the ratio of ?M to ?B?
- A 2 to 1
- B 3 to 2
- C 1 to 1
- D 2 to 3
- E 1 to 2