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:

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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

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