A person has to cover a distance of 6 km in 45 minutes. If he covers one-half of the distance in two third of the total time, to cover the remaining distance in the remaining time, his speed (in km/hr.) must be

• ক 14 km/hr.
• খ 10 km/hr.
• গ 12 km/hr. ✅ সঠিক উত্তর
• ঘ 8 km/hr.