At 46 km/hr and 36 km/hr, two trains of equal length are travelling in the same direction on parallel tracks. In 36 seconds, the quicker train passes the slower train. Each train is the following length:
A. 50 m
B. 72 m
C. 80 m
D. 82 m
Answer:A
At 46 km/hr and 36 km/hr, two trains of equal length are travelling in the same direction on parallel tracks. In 36 seconds, the quicker train passes the slower train. Each train is the following length:
A. 50 m B. 72 m C. 80 m D. 82 m
Explanation: Let each train be x metres long.Then the distance covered is equal to 2x metres. (46 - 36) km/hr= 10 x 5/18 m/s= 25/9 m/secAs a result, 2x/36 = 25/9, 100 = 2x.x equals fifty.