An alloy contains the copper and aluminum in the ratio of 7 : 4 While making the weapons from this alloy, 12% of the alloy got destroyed. If there is 12 kg of aluminum in the weapon, then weight of the alloy required is :

• ক 40 kg
• খ 37.5 kg ✅ সঠিক উত্তর
• গ 48 kg
• ঘ 14.4 kg