A 150 mt. long train crosses a signal post in 7 sec. What is the speed of the train in kmph?
Answer: (d) 540/7 km/hr.
Length of the train = 150 mt.
Train covered distance in 7 sec = 150 m
Therefore speed of train = 150/7 m/sec.
Speed in Km/hr = 150 x 18/7 x 5 = 540/7 km/hr.
Hence, the speed of the train = 540/7 km/hr.