Question

2.
Two trains are running in opposite directions with the same speed. If the length of each train is 120 metres and they
cross each other in 12 seconds, then the speed of each train (in km/hr) is
A
10
B
18
С.
36
D.72​

Answer 1

Answer:

Step-by-step explanation:

If the length of each train be 120 metres, in what time (in seconds) will they cross each other travelling in opposite direction? m/sec = 12 m/sec. m/sec = 8 m/sec. Relative speed = (12 + 8) = 20 m/sec.