RRB NTPC CBT I 4 Jan 2021 Shift 1 Paper

Question : 47 of 100

Marks: +1, -0

Train A, running at the speed of 80 km/hr crossed train B, running at the speed of 70 km/hr in the opposite direction. Both trains finish crossing each other in 30 seconds. If the length of train A is 300 m, then the length of train B is: