Someone uses a watch to measure the acceleration of a train. First, measure it for three minutes. The train runs 540 meters. After three minutes, measure it for another minute. The train runs 360 meters. If the train is seven minutes Someone uses a watch to measure the acceleration of a train. First, he measures it for three minutes. The train runs 540 meters. Then, he measures it for another minute after three minutes. The train runs 360 meters. If the train accelerates in a straight line within seven minutes, can he calculate the acceleration of the train?

Suppose: the speed of the train in the first minute is XM / min, and the acceleration of the train is YM / min, then according to the meaning of the question: x + (x + y) + (x + y + y) = 540, that is, x + y = 180 (1) x + 5Y = 360 (2)
The solution (1), (2) is x = 144, y = 36
That is, the train acceleration is 36m / min

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