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Aptitude Day 294

Problems to solve on Trains: 

1. 2 trains are running at 30 km/hr and 20 km/hr respectively in the same direction. Fast train completely passes a man sitting on the slower train in 18 seconds. What’s the length of the fast train?

2. 2 trains 120 m and 100 m long run at the speed of 80 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time which they take to cross each other is:


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