GMAT
题目
Jack and Mack start simultaneously towards each other from two places which are 1260 km apart. They travel with respective speeds of 130 kmph and 122 kmph. What is the total distance they covered in the last minute before they cross each other?
解析
针对这道题，我们可以利用杰克和麦克出发时相距1260千米这一信息。
每经过1小时，两人之间的距离会缩短252千米（\(130 + 122 = 252\)）。
因此，每经过1分钟，两人之间的距离会缩短 \(\frac{252}{60}\) 千米。
\[
\frac{252}{60} = 4.2
\]
答案：D
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