state gov UP Police Constable Mock Test Series 2025 Quantitative Aptitude Speed Time and Distance Problem on Trains
A passenger train of length 150 m at certain speed and goods train of length 60 m at a speed of 54 km/h crosses each other in 6 seconds running in the opposite direction. If a passenger train takes 45 seconds to cross a bridge of length A m, then find the length of bridge.
1
750 m
2
250 m
3
450 m
4
900 m