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It takes 52 seconds for a train to pass the 320 meter long tunnel. When it passes the 864 meter long bridge, its speed is 1 / 4 higher than that when it passes the tunnel. As a result, it takes 1 minute and 36 seconds. How long is the train body? The length of the train body? Is it the length of the whole train or just the body?
Let the length of the train be x meters and the speed of passing through the tunnel be YM / s
52×Y=320+X
96×（1+1/4）Y=864+X
Y = 8m / S
X=96m
Answer: the train is 96 meters long
It takes 52 seconds for a train to go through a 320 meter tunnel and cross the 864 meter bridge, which is 1 / 4 longer than the tunnel time. It takes 1 minute and 36 seconds to find the speed when passing the bridge
1 minute 36 seconds = 96 seconds
v=s/t=864m/96s=9m/s=32.4km/h
It takes 52 seconds for a train to pass the 320 meter tunnel, and 120 seconds for it to pass the 864 meter bridge. Find out the speed of the train and the speed of a train to pass the 320 meter? C
emergency
This thing can't count. The speed of each station is different. It depends on which station he is
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