A train travels a distance of 600 km at a constant speed. If the speed of the train is increased by 5 km/hr, the journey would take 4 h less. Find the speed of the train?

• ক 32 km/hr.
• খ 36 km/hr.
• গ 25 km/hr. ✅ সঠিক উত্তর
• ঘ 30 km/hr.