Two trains start from New Delhi. One train runs to the west and the other to the north. The speed of the first train exceeds the speed of the second train by 5 km/hr. The distance between them after 2 hours is 50 km. The average speed of the seconds train is:

A) 20 km/h

B) 30 km/h

C) 15 km/hr

D) 10 km/hr

This MCQ is part of the UP PSC Previous Year Questions (PYQs) series, focusing on UPPSC Prelims 2002 (GS Paper I)