根据网考网考试中心的统计分析，以下试题在2018/2/9日GRE考试习题练习中，答错率较高，为：67%
【单选题】If Jason traveled 30 miles in 6 hours and Becky traveled three times as far in half the time, what was Becky's average speed, in miles per hour
- A. 5
- B. 15
- C. 30
- D. 45
- E. 90
根据网考网考试中心的统计分析，以下试题在2018/2/9日GRE考试习题练习中，答错率较高，为：67%
【单选题】If Jason traveled 30 miles in 6 hours and Becky traveled three times as far in half the time, what was Becky's average speed, in miles per hour
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