GRE Problem Solving Question 787
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The average annual cost to attend a private university increased at a constant rate from 1995 to 2000, and 2.5 million students attended private universities in 1998. If 2 million students attended private universities in 1990, then by approximately what percent did the total dollar amount spent on private universities increase from 1990 to 1998?
- A 25%
- B 30%
- C 55%
- D 70%
- E 90%