Problems on trains

Quantitative Aptitude ( CCS)

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Two trains 140 metre and 160 metre long run at the speed of 60 km/hr and 40 km/hr respectively in opposite direction on parallel tracks. What time these will take to cross each other ?

10.7 Seconds

10.8 Seconds

10.9 Seconds

11.8 Seconds

Explanation:

Relative Speed = 60+40 = 100 Kmph
= 100*(5/18) = 250/9 m/sec
Distance to be covered = 140 + 160 = 300 metres
Time = Distance/Speed
Time=300∗9/250 = 54/5 = 10.8 seconds

Hence, option 2 is the correct answer.

By: Amit Kumar

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