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:
A10
B18
C24
D36
Answer:
D. 36
Read Explanation:
Speed= distance/time
Since the trains are in opposite directions
Distance = 120 + 120 = 240meter
Time = 12 + 12 = 24 s
Speed= 240/24 = 10 m/s
= 10 × 18/5
= 36 Km/hr