Problema Solution
A train 400m long is running at a speed of 72 km/hr. how much time does it take to cross the pole
Answer provided by our tutors
72 km/hr = 7000 m/hr
400/7000 = 4/70 hr = 4*60/70 min = 3 3/7 min = 3 min 3*60/7 sec = 3 min 25.1 sec
it takes 3 min 25.1 sec for the train to cross the pole.