A person walks from point A to point B. He walks 40% of the journey in the first 10 minutes, and walks 60% of the remaining distance in the next 10 minutes. Which is the faster speed of this person in the first 10 minutes or the last 10 minutes?
一个人从甲地走向乙地，前10分钟他走了全程的40%，接下来的10分钟他走了剩下路程的60%．这个人前10分钟和后10分钟的速度哪个更快-些？
<result>10</result>