2. 外语
  3. If Jason traveled 30 miles in 6 hours and Katie traveled three times as far in half the time, what was Katie’s average speed, in

If Jason traveled 30 miles in 6 hours and Katie traveled three times as far in half the time, what was Katie’s average speed, in

admin2012-01-15  25
问题 If Jason traveled 30 miles in 6 hours and Katie traveled three times as far in half the time, what was Katie’s average speed, in miles per hour?
选项 A、5
B、15
C、30
D、45
E、90
答案C
解析
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