Allied & ICAR Exam Bank • ALLIED_2557 NAT • 2 Marks

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Ratios & Percentages

Question Statement:

An alloy contains 40% zinc and 60% copper. Another alloy contains 35% zinc and 65% copper. If 50 kg of the first alloy is mixed with 150 kg of the second, the percentage of zinc in the final mixture is:

Answer Key:

36.25

Step-by-Step Solution & Explanation

Zinc $= 50(0.40) + 150(0.35) = 20 + 52.5 = 72.5$ kg. Total weight $= 200$ kg. Percentage $= (72.5 / 200) \times 100 = 36.25\%$.
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