Question

A train 350 metres long crosses an electric pole in 28 seconds. Find the speed of the train in Km/hr.

​

Answer 1

Speed = Distance /Time

Speed = 350/28 m/s

As u wanted in km/hr

Speed = 45 km/hr

Answer 2

speed = Distance / Time
350/28 = 50/4 = 25/2
25/2 m/s
25/2 × 60×60/1000
25×60×60/2×1000
25× 18/5×2
5×9 = 45
hence the speed of train is 45 km/hr .