সব প্রশ্নে ফিরে যান
Math
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:
A) 45 km /hr
B) 50 km /hr
সঠিক উত্তর
C) 54 km /hr
D) 55 km/hr