state gov WBPSC Miscellaneous Services Mock Test 2023 Quantitative Aptitude Speed Time and Distance Relative Speed
Two trains A and B, 210 m and 150 m. respectively, in length, are running in the same direction on parallel lines. If the speed of A and B be 110 km/h and 128 km/h, respectively, then what will be the time (in seconds) taken by train B to cross train A?
1
72
2
74
3
71
4
70