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作业中遇到这样一道题:一列火车通过一座560米长的大桥用了45秒,然后又用同样的速度通过另一座380米长的大桥用了36秒。这列火车的速度和火车的全长各是多少?初看这道题,我很迷茫,不知从何下手,于是我作图分析如下:
I encountered a problem during my assignment: a train took 45 seconds to pass a 560-meter-long bridge and took 36 seconds to cross the 380-meter-long bridge at the same speed. What is the speed of this train and the total length of the train? At first glance, I was very confused and did not know where to start. So I plotted the following: