RRB NTPC · Question 77
A train leaves station A towards station B at the speed of 50 km/hr. After half an hour, another train leaves station B towards station A at 150 km/hr. The distance between the stations is 725 km. The distance of the point from station A where the two trains are to meet is:
Show answer & explanation
Answer: (C) 200 km
Explanation
In the first half hour train A covers 25 km, leaving 700 km. Closing at 50 + 150 = 200 km/h, they meet 3.5 hours later. Train A has then travelled 25 + 50 × 3.5 = 200 km from A.