Two trains are moving in opposite directions at the speed of 50 and 70 km/ph. Their lengths are 150m and 100m. The time required for their crossing is?
Correct answer B. 7.5 seconds
Topic / 14 questions
Train Problems MCQs are aptitude questions about trains crossing bridges, people, cars or each other, solved using speed, distance, time and relative speed. They help candidates for recruitment, defence, banking and admission tests. Every question shows its correct answer instantly, so you can check your working and improve your timing.
Correct answer B. 7.5 seconds
Correct answer D. none
Correct answer B. 1:03
Correct answer C. d/(h-2)
Correct answer D. 150
Correct answer C. 175
Correct answer C. 50
Correct answer B. 860
Correct answer C. 5 seconds
Correct answer A. 18 km/h
Correct answer A. 32 km/h
Correct answer D. 300m
Correct answer C. 100m
Correct answer C. 210
These word problems, many using local routes such as Multan to Lahore, test careful setting up of distance and speed. Questions include two trains approaching each other from opposite directions, trains overtaking in the same direction, a train crossing a bridge, and a train passing a walking man and then a car. Others ask when two trains leaving at different times will meet, or what speed would avoid a late arrival. Always add lengths when one train passes another and use the sum of speeds for opposite directions and the difference for the same direction.
Pakistan
India
Bangladesh
If the trains start at different times, first find the distance the earlier train covers before the second one starts. Subtract that from the total distance, then divide the remainder by the sum of their speeds if they are moving towards each other. Add that time to the second train's start time.
The train must cover the bridge length plus its own length. Convert speed to metres per second by multiplying km/h by 5/18. A 100 m train at 48 km/h crossing a bridge in 30 seconds covers 400 m in total, so the bridge is 300 m long.
MCQs360 has 14 Train Problems MCQs in this category, free to practise with no sign-up and with answers shown instantly. The separate Problems on Trains category adds more practice on the same skill. Converting speeds to metres per second at the start prevents most mistakes.
Last reviewed October 2026