Two trains each 200 m long move towards each other on parallel lines w – McqOptions

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1.	Two trains each 200 m long move towards each other on parallel lines with velocities 20 km/h and 30 km/h, respectively. What is the time that elapses when they first meet until they have cleared each other?
A.	24.8 s
B.	30 s
C.	20 s
D.	28.8 s
Answer» E.

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