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2 trains are 2 km apart and their lengths are 200m and 300m.They are approaching towards each other with a speed of 20m/s and 30m/s.After how much time they cross each other ?
8 years ago

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bobpursley
Combined, they need to cover 2000+500m

relative speed: 50m/s

time=distance/velociyt=2500/50=50sec
8 years ago

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