A train 1350 m long takes 135 seconds to cross a man running at a speed of 5kmph in a direction same to that of the train. What is the speed of the train?
A60 km/h
B41 km/h
C52 km/h
D86 km/h
Answer:
B. 41 km/h
Read Explanation:
Let the speed of the train be x km/h
Relative speed = (x - 5) km/h
(x - 5) =(1350/135) x 18/5
x - 5 = 36
⇒ x = 36 + 5 = 41 km/h