Two trains 128 meters and 122 meters long are running towards each other on parallel lines at 48 kmph and 42 kmph respectively. In what time will they clear off each other from the moment they meet?

Two trains 128 meters and 122 meters long are running towards each oth

1.	Two trains 128 meters and 122 meters long are running towards each other on parallel lines at 48 kmph and 42 kmph respectively. In what time will they clear off each other from the moment they meet?
A.	10 seconds
B.	12 seconds
C.	18 seconds
D.	14 seconds
E.	9 seconds
Answer» B. 12 seconds

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Two trains 128 meters and 122 meters long are running towards each other on parallel lines at 48 kmph and 42 kmph respectively. In what time will they clear off each other from the moment they meet?

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