When Xiao Ming was on the train, the first time Wang looked out of the window, he happened to see that the number of kilometers on the roadside milestone was one by one, and the number was six double digits When you look out, you can see that the kilometer on the roadside milestone is just the original two digit number, and the front and back positions have been exchanged; when you look out of the car window after another 20 minutes, the kilometer on the roadside milestone is a three digit number, and it's just the middle of the two digit number you see for the first time, with an extra 0. According to the above information, calculate the train speed When Xiao Ming took the train, when he looked out of the window for the first time, he saw that the number of kilometers on the roadside milestone was two digits of six. When he looked out of the car again, he saw that the number of kilometers on the roadside milestone was just the original two digits, and the front and back positions were exchanged. After 20 minutes, when he looked out of the window again, the number of kilometers on the roadside milestone was three digits, According to the above information, the train speed can be calculated

When Xiao Ming was on the train, the first time Wang looked out of the window, he happened to see that the number of kilometers on the roadside milestone was one by one, and the number was six double digits When you look out, you can see that the kilometer on the roadside milestone is just the original two digit number, and the front and back positions have been exchanged; when you look out of the car window after another 20 minutes, the kilometer on the roadside milestone is a three digit number, and it's just the middle of the two digit number you see for the first time, with an extra 0. According to the above information, calculate the train speed When Xiao Ming took the train, when he looked out of the window for the first time, he saw that the number of kilometers on the roadside milestone was two digits of six. When he looked out of the car again, he saw that the number of kilometers on the roadside milestone was just the original two digits, and the front and back positions were exchanged. After 20 minutes, when he looked out of the window again, the number of kilometers on the roadside milestone was three digits, According to the above information, the train speed can be calculated

sth. is too difficult to understand