One day as you go for an evening walk, you see a tunnel and walk into it. Just as you reach two-fifth of the tunnel, you hear a train that is moving at constant speed, coming behind you. If you run back at a speed of 10 m/s, you will reach the entrance of tunnel just as the train enters the tunnel. If you run forward at 10 m/s, you will reach the end of the tunnel just as the train is about to hit you. What is the speed of the train?
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it should be 20 m/s.
if u want i can explain how.
please mark as brainliest.
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