Bhagat and Chandu start simultaneously from village X to village Y, with their respective speeds in the ratio 3 : 2. After travelling one-fourth of the total distance, Chandu triples his speed and travels for some more time, following which, he again changes his speed and completes the rest of the journey. Bhagat, however, maintains his initial speed throughout the journey. Also, the time for which Chandu travels at thrice his initial speed is one-third of his total time of travel. On their journey back to X from Y, Bhagat starts 20 min after Chandu. Their respective speeds remain same as their initial speeds from X to Y. What is the distance between the two when Bhagat reaches exact midway if total distance from X to Y is 9 Km? It is known that Chandu reaches 1 hr and 10 min later than Bhagat.