Q. 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 :

• A. 14.4 kg
• B. 37.5 kg
• C. 40 kg
• D. 48 kg

Correct Answer: B