Q1 · hard · AI-verified
Two trains start from stations P and Q, 600 km apart, towards each other at the same time. Train from P travels at 80 km/h and train from Q travels at 70 km/h. After how many hours will they meet?
- 3.5 hours
- 6 hours
- 5 hours
- 4 hours
Q2 · easy · AI-verified
A train 150 m long is running at 54 km/h. How many seconds will it take to cross a pole?
- 15 seconds
- 8 seconds
- 10 seconds
- 12 seconds
Q3 · hard · AI-verified
A train of length 500 m takes 50 seconds to cross a tunnel. If the train's speed is 72 km/h, what is the length of the tunnel?
- 600 m
- 500 m
- 400 m
- 450 m
Q4 · easy · AI-verified
Two trains are running in the same direction at 60 km/h and 40 km/h. What is their relative speed?
- 20 km/h
- 10 km/h
- 100 km/h
- 50 km/h
Q5 · hard · AI-verified
A boat travels 36 km upstream in 6 hours and returns the same distance downstream in 3 hours. What is the speed of the boat in still water?
- 9 km/hr
- 10 km/hr
- 6 km/hr
- 12 km/hr