Two trains started at the same time, one from A to B and other from B to A. if they arrived at B and A respectively in 4 hours and 9 hours after they passed each other, the ratio of the speeds of the two trains was:

• ক 3:2 ✅ সঠিক উত্তর
• খ 5:1
• গ 3 : 1
• ঘ 4 : 3