Leaving Howrah station after 1 hour a train is late by 1 hour for a special reason and then running with 3/5 th of its initial speed it reaches its destination by 3 hours. If the special reason be 50 km away from its first place, then the train would reach its destination 1 hour 20 minutes before its previous time. Let us calculate the distance that the train had covered and the original speed of the train.