- A10
- B12
- C20
- D15
Step-by-Step Solution
Relative speed = 108 km/h = 30 m/s; combined length = 300 m; time = 300/30 = 10 s.
Answer: A) 10
Two trains, 140 m and 160 m long, run on parallel tracks in opposite directions at 50 km/h and 58 km/h. In how many seconds do they completely cross each other?
Competition practiceSpeed, Time & Distance
Master this topic in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Speed, Time & Distance practice questions
More Speed, Time & Distance practice
A train running at 72 km/h crosses a platform 250 m long in 20 seconds. What is the…A boat covers 20 km downstream in 2 hours and 12 km upstream in 2 hours. Find the speed…A boatman rows at 10 km/h in still water and the stream flows at 4 km/h. How long will…A man can row at 6 km/h in still water. He takes twice as long to row a certain distance…A train 200 metres long running at 90 km/h crosses a platform 400 metres long. How many…