Allied & ICAR Exam Bank • ALLIED_2185 NAT • 2 Marks

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Numerical Computation

Question Statement:

A container holds 50 liters of pure chemical. Ten liters are removed and replaced with solvent. Then 10 liters of the mixture are removed and replaced with solvent. The final percentage of pure chemical in the container is:

Answer Key:

64

Step-by-Step Solution & Explanation

Fraction remaining = $(1 - 10/50)^2 = (0.8)^2 = 0.64 = 64\%$.
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