GRE考试

【单选题】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
A、5
B、15
C、30
D、45
E、90
网考网参考答案：C
网考网解析：
You are given that Jason traveled 30 miles in 6 hours and that Katie traveled three times as far in half the time; Katie traveled 30×3, or 90 miles, in[*] or 3 hours. Therefore, Katie traveled [*], or 30 miles per hour. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>