Allied & ICAR Exam Bank • ALLIED_1612 MCQ • 1 Mark

Section 8: General Aptitude

Quantitative Aptitude

Subtopic: Ratios & Percentages

Question Statement:

A 50-liter saline solution contains 6% salt. How much water must be evaporated to make it a 10% salt solution?

Options:

  • (A) 20 liters
  • (B) 15 liters
  • (C) 25 liters
  • (D) 18 liters

Answer Key:

A

Step-by-Step Solution & Explanation

Salt content $= 50 \times 0.06 = 3$ kg. In 10% solution, total volume $= 3 / 0.10 = 30$ liters. Water evaporated $= 50 - 30 = 20$ liters.
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