25. A distance is covered in 2 hours 45min. at 4km/hr. How much time will be taken to cover it at 16.5 km/hr:

26. If a train runs at 40 km/hr, it reaches its destination lake by 11 min but if its runs at 50 km/hr, it is late by 5 min. only. The correct time for the train to cover its journey is:

27. Two trains start at the same time from Aligarh and Delhi and proceed towards each other at 16km/hr and 21km/hr respectively, When they meet, it is found that one train has travelled 60 km more than the other. The distance between the two stations is: