- A45 km/h
- B81 km/h
- C36 km/h
- D9 km/h
Step-by-Step Solution
Relative speed m/s km/h. Same direction, so blue km/h. (36 km/h is only the relative speed.)
Answer: B) 81 km/h
In the figure the faster blue train takes 36 seconds to pass the orange one completely. What is the blue train's speed?
Competition practiceProblems on Trains
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 Problems on Trains practice questions
More Problems on Trains practice
Two trains, each 120 m long, take 10 s and 15 s respectively to pass a pole. How long…A train passes a 400 m bridge in 50 seconds and a 250 m bridge in 40 seconds. How long…Indore and Bhopal are 190 km apart. Trains P and Q start from them at the same time…A train must cover 360 km. It runs the first 180 km at 45 km/h. At what speed must it…On a 150 km stretch the Duronto takes 30 minutes less than an express that is 10 km/h…