IBPS SO Prelims Exam Model Paper 3

Given:
The length of train A is 200 m and the speed is 90 km/h
The length of train B is 160 m and the speed is 72 km/h
Calculation:
They are coming from the same direction, so the relative speed of them = (90 - 72) km/h
⇒ 18 km/h
⇒ {18 × (

5

18

)} m/s
⇒ 5 m/s
Total distance covered by A and B = (200 + 160) m = 360 m
So, to cross each other completely the required time = (

360

5

) sec = 72 sec
∴ They can cross each other completely in 72 sec.