Two trains 150m and 170m long are running towards each other on parallel tracks at speeds of 42 km/h and 30 km/h respectively. In what time will they clear each other? MCQ with Answer and Explanation
Two trains 150m and 170m long are running towards each other on parallel tracks at speeds of 42 km/h and 30 km/h respectively. In what time will they clear each other?
A. 15 seconds
B. 18 seconds
C. 20 seconds
D. 16 seconds
Answer: Option D
Solution (By JKSSB Mock Tests)
Total distance = 150 + 170 = 320 meters. Relative speed = 42 + 30 = 72 km/h = 72 * (5/18) = 20 m/s. Time taken = 320 / 20 = 16 seconds.
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