GMAT 考满分题库

- 数学PS -
It takes Tom 15 mins to travel 2 miles from A to B, and 25 mins to return from B to A. If Tom travels the same route for this round trip with no stop, what is the average speed, in miles per hour, of Tom?
  • A0.1
  • B0.5
  • C2
  • D4
  • E6
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正确答案: E

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