SSC Delhi Police Constable 2025 Mock Test Series (New) Quantitative Aptitude Speed Time and Distance Problem on Trains
A man travelling in a train notices that he can count 21 telephone posts in 1 min. If the poles are 50 m apart, then at what speed is the train travelling?
1
50 km/h
2
21 km/h
3
60 km/h
4
65 km/h