Aptitude Problem on Trains Test Paper 311) A train moving at 108 km/hr crosses a platform in 18 seconds and a man standing on the platform in 10 seconds. Find the length of the platform.
The correct option is (C). Answer with explanation: Speed of train in m/s= 108* = 30 m/s Length of the train = Speed * Time (time taken to cross the man) = 30 x 10 = 300 meters Now, the time taken to cross the platform is = Total distance covered = length of train + length of platform Let the length of platform is X then the total distance = 300 + X Speed of train= 30 m/s Time = 18 = 540 = 300+X 240 = X or X=240 meters 12) A train of length 240 meters crosses a pole in 12 seconds. In what time it will cross a platform of length 400 meters?
The correct option is (A) Answer with explanation: Time taken to cross the platform = Distance covered = length of train + length of platform = 240 + 400 = 660 meters Speed of train = Distance (length of train) / time taken to cross the pole
So,time taken to cross the platform = 13) Two trains of equal length are moving in same direction on parallel tracks at speed of 92 km/hr and 72 km/hr respectively. The faster train crosses the slower train in 18 seconds. Find the length of each train.
The correct option is (D) Answer with explanation: Let the length of each train is X. Distance covered = 2X (sum of the length of trains) Relative Speed of faster train= 92 − 72 = 20 km/hr Relative Speed in m/s = 20 x Relative speed of faster train =
14) A train of length 150 meters running at 100 km/hr. It crosses another train which is moving in opposite direction at 80 km/hr in 8 seconds. Find the length of the other train.
The correct option is (C) Answer with explanation: Relative Speed = 100 + 80= 180 km/hr Relative Speed in m/s= 180 x= 50 m/s Let the length of the other train is = X meters Now Relative Speed = Then, =50 150 + X = 400 X = 400 150 X = 250 meters 15) Two trains of equal length 200 meters are moving in opposite direction on parallel tracks. The trains cross each other in 10 seconds. If one train is moving twice as fast as the other train, find the speed of faster train.
The correct option is (A) Answer with explanation: Let the speed of the slower train = X m/sec Then, the speed of the faster train will be = 2X m/sec Relative Speed = X + 2X = 3X m/sec Relative Speed is also =
X (speed) in Km/hr = == 48 Km/hr Problem on Trains Aptitude Test Paper 1 Problem on Trains Aptitude Test Paper 2 Problem on Trains Aptitude Test Paper 4 Problem on Trains Aptitude Test Paper 5 Problem on Trains Concepts
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