Data Interpretation

Ladakh Police Sub-Inspector · Mathematics · 100 practice questions with answers and explanations: 38 Easy, 62 Medium, 0 Hard.

Sample questions

Sample Easy question 1

Out of 300 candidates, 90% passed. How many failed?

  1. 32
  2. 28
  3. 25
  4. 30
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Answer: D. Passed = 270, failed = 300 - 270 = 30.

Sample Easy question 2

Out of 160 candidates, 75% passed. How many failed?

  1. 38
  2. 42
  3. 35
  4. 40
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Answer: D. Passed = 120, failed = 160 - 120 = 40.

Sample Easy question 3

A survey of 350 people found 40% prefer tea. How many prefer tea?

  1. 135
  2. 142
  3. 138
  4. 140
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Answer: D. 40% of 350 = 140.

Sample Medium question 4

In a company, the ratio of male to female employees is 7:5, and the total is 720. If 30% of females are managers, how many female managers are there?

  1. 92
  2. 90
  3. 88
  4. 94
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Answer: B. Females = 5/12 × 720 = 300; managers = 30% of 300 = 90.

Sample Medium question 5

A company's profit rose by 20% in year 1 and fell by 10% in year 2. If the initial profit was Rs. 5,00,000, find the profit after year 2.

  1. 5,40,000
  2. 5,50,000
  3. 5,30,000
  4. 5,20,000
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Answer: A. After year 1: 5,00,000 × 1.2 = 6,00,000. After year 2: 6,00,000 × 0.9 = 5,40,000.

Sample Medium question 6

A company's profit rose by 25% in year 1 and fell by 20% in year 2. If the initial profit was Rs. 4,00,000, find the profit after year 2.

  1. 3,90,000
  2. 4,10,000
  3. 4,20,000
  4. 4,00,000
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Answer: D. After year 1: 4,00,000 × 1.25 = 5,00,000. After year 2: 5,00,000 × 0.8 = 4,00,000.

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