A train 125 m long passes a man, running at 5 km/hr in the same direc…

Question

A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. The speed of the train is:

Accepted Answer

Option B. 50 km/hr. Answer & Solution Answer: Option B Solution: & Speed\, of\, the\, train\, relative\, to\, man & = 12510 m/sec & = 252 m/sec & = 252 × 185 km/hr & = 45\, km/hr & Let\, the\, speed\, of\, the\, train\, be\,x\, km/hr. & Then, relative speed = ( x - 5 )\, km/hr & x - 5 = 45 & x = 50…