Two buses start from a bus terminal with a speed of 20 km/h at interval of 10 minutes. What is the speed of a man coming from the opposite direction towards the bus terminal if he meets the buses at interval of 8 minutes?

• ক 4 km/h
• খ 3 km/h
• গ 5 km/h ✅ সঠিক উত্তর
• ঘ 7 km/h