A man can reach a certain place in 30 hours .If the reduces his speed by 1/15th, he goes 10 km less in that time. Find his speed.

• ক 5 km/hr ✅ সঠিক উত্তর
• খ 10 km/hr.
• গ 6 km/hr.
• ঘ 8 km/hr.