Train Passes the Tunnel
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A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?
Train is travelling at 60 miles/hour. Both the length of train and tunnel is same – 1 mile.
Train with its front end will reach the end of tunnel in 1 minute.. However, tail end has just entered the tunnel.
Hence for the complete train to exit the tunnel, it will take 2 minutes.
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