A boy runs opposite to that of a train at a speed of 20 km/hr. If the relative speed between the train and the boy running in the opposite direction is 60 km/hr. What is the length of the train, if it takes 20 seconds to cross the boy, when he is at rest?

• ক 159.1 m
• খ 166.6 m
• গ 154.12 m
• ঘ 222.2 m ✅ সঠিক উত্তর