If 4 kg of metal of which 1/3 is silver and the rest is copper, be mixed with 3 kg of metal, of which 1/4 is silver and the rest is copper, then what will be the ratio of silver to copper in the mixture?

• ক 25 : 41
• খ 23 : 63
• গ 17 : 35
• ঘ 25 : 59 ✅ সঠিক উত্তর