Alloy A contains 40% gold and 60% silver. Alloy B contains 35% gold and 40% silver and 25% copper. Alloys A and B are mixed in the ratio of 1 : 4. What is the ratio of gold and silver in the newly formed alloy?

• ক 9 : 11 ✅ সঠিক উত্তর
• খ 11 : 9
• গ 25 : 35
• ঘ 20 : 30
• 5 80 : 20