From a point on a circular track 5km long A,B and C started running in the same direction at the same time with speed of 212212 km per hour, 3 km per hour and 2 km per hour respectively. Then on the starting point all three will meet again after ?

• ক 15 hours
• খ 10 hours ✅ সঠিক উত্তর
• গ 6 hours
• ঘ 30 hours