The ratio between the parents ages of A and B is 5 : 3 respectively. The ratio between A's age 4 years ago and B's 4 years hence is 1 : 1. What is the ratio between A's age 4 years hence and B's age 4 years ago ?

• ক None of these
• খ 1 : 3
• গ 3 : 1 ✅ সঠিক উত্তর
• ঘ 2 : 1