Directions: Answer the following question based on the information given below.

Train X of length [A] meters crosses a platform twice its length in 15 seconds. Another train Y of length 200 meters crosses a cyclist, moving in the opposite direction as that of train with a speed 18 km/h, in 10 seconds. Ratio of speed of trains X and Y is 4 :1 respectively. Both the trains can cross each other while moving opposite directions in [B] seconds.

Train X is supposed to travel 3240 km with the condition that it will take rest of 10 minutes after travelling for an hour. Total time of travel for train X to cover 3240 km is [C] hr. On the other hand, train Y charges a fare of Rs. 1.50 for 1 km journey. If Aman paid Rs. 810 for the ticket in train Y, then he could travel for [D] hours.