Percentage

SSC CGL · Quantitative Aptitude · 81 practice questions with answers and explanations: 39 Easy, 26 Medium, 16 Hard.

Sample questions

Sample Easy question 1

90 is 30% of what number?

  1. 280
  2. 290
  3. 300
  4. 310
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Answer: C. Number = 90/0.3 = 300.

Sample Medium question 2

In an examination, a student who scores 40% fails by 20 marks, while the passing mark is 50%. Find the maximum marks.

  1. 180
  2. 190
  3. 200
  4. 220
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Answer: C. Let max marks = M. 0.4M + 20 = 0.5M, so 0.1M = 20, M = 200.

Sample Hard question 3

If the price of petrol increases by 60%, by what percentage should consumption be reduced to keep expenditure unchanged?

  1. 32.5%
  2. 35%
  3. 37.5%
  4. 40%
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Answer: C. Required reduction % = (60/160) × 100 = 37.5%.

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