A train which is moving at an average speed of 40 km/h reaches its destination on time. When its average speed reduces to 35 km/h, then it reaches its destination 15 minutes late. The distance traveled by the train is?

• ক 40 km
• খ 80 km
• গ 30 km
• ঘ 70 km ✅ সঠিক উত্তর