Time and work, pipes, time and distance
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- In the exam pattern: First Stage Computer Based Test (CBT-I), Mathematics: 30 questions, 30 marks (RRB notice, 13 Aug 2026).
- Next exam day: CBT-II exam (expected): 15 Feb 2027 (Expected — an estimate, not announced).
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Practice this topic
Take a full mock →Q1 · Time and work, pipes, time and distance · MEDIUM
A train 150 m long is running at 90 km/h. How much time will it take to cross a pole?
Q2 · Time and work, pipes, time and distance · MEDIUM
A train 100 m long is moving at 72 km/h. It crosses a platform in 20 seconds. What is the length of the platform?
Q3 · Time and work, pipes, time and distance · MEDIUM
Two trains of lengths 120 m and 180 m are moving in the same direction at speeds of 72 km/h and 54 km/h respectively. How long will it take for the faster train to completely overtake the slower train?
Q4 · Time and work, pipes, time and distance · HARD
A man can row a boat at 8 km/h in still water. If the speed of the stream is 2 km/h, what is his average speed when he rows 10 km downstream and returns 10 km upstream?
Q5 · Time and work, pipes, time and distance · MEDIUM
Pipe A fills a tank in 12 hours and Pipe B empties it in 15 hours. If both pipes are opened simultaneously, in how many hours will the tank be filled?