state gov Kolkata Police Constable Mock Test 2024 Quantitative Aptitude Speed Time and Distance Problem on Trains
A boy inside a train counts 51 telephone poles in one min and the distance between two consecutive poles is 6 m. Find the length of the train if it takes 50 sec to cross the stationary pole.
1
200 m
2
250 m
3
300 m
4
350 m