other govt exam NPCIL Assistant Grade 1 (Paper I & Paper II) 2025 Mock Test Logical Reasoning Puzzle Quant Based Puzzle
A man observes a train entering a tunnel which is 4 km long. If the length of the train is one-eighth of the length of the tunnel and it exits the tunnel in 6 minutes, what is its speed?
1
48 km/h
2
40 km/h
3
45 km/h
4
50 km/h