A train 108 metre long is moving at a speed of 50 km hr It crosses a train 112 metre long coming fro...........

Quantitative Aptitude ( CCS) Problems on trains

A train 108 metre long is moving at a speed of 50 km/hr. It crosses a train 112 metre long coming from opposite direction in 6 seconds. What is the speed of the second train?

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Explanation:

Distance covered =(108+112)=220 metre
Time = 6 seconds
Relative speed = 220/6 = 110/3 m/s
= 110/3 × 18/5 = 132 km/hr
50 + Speed of second train =132 km/hr
⇒ Speed of second train =(132−50)=82 km/hr

Hence, option 1 is the correct answer.