A train approaches a 800 m long tunnel AB. Inside the tunnel there is a rabbit when the train whistles, the rabbit runs. If the rabbit moves to the entrance of the tunnel A, the train catches the rabbit exactly at the entrance. If the rabbit moves to the exit B, then the train catches the rabbit at the exit. If the speed of the train is four times the speed of the rabbit, what is the distance of the point at which train whistles fromthe entrance of the tunnel.