200m long train crossed a 3km tunnel in 2 minutes What is the speed of the train
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In two minutes = 3000 metres
In one minute = 1500 metres
Now,
In one minute, 200m long train covered 1500 metres.
Therefore, 1 metre of it covered = 1500/200 metres in one minute
Thus , speed = 7.5 metres per minute
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