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


【正确答案】 C
【答案解析】You are given that Jason traveled 30 miles in 6 hours and that Becky traveled three times as far in half the time; Becky traveled 30×3 or 90 miles in [*], or 3 hours. Therefore, Becky traveled [*], or 30 miles per hour.