Data Interpretation

Ladakh Prison Department · Mathematics · 100 practice questions with answers and explanations: 38 Easy, 62 Medium, 0 Hard.

Sample questions

Sample Easy question 1

A shop's revenue is split as: Electronics 35%, Clothing 40%, Groceries 25%. If Electronics revenue is Rs. 7,00,000, find the total revenue.

  1. 19,00,000
  2. 19,50,000
  3. 20,50,000
  4. 20,00,000
Show answer

Answer: D. 35% of total = 7,00,000, so total = 7,00,000/0.35 = 20,00,000.

Sample Easy question 2

A shop's revenue is split as: Electronics 30%, Clothing 45%, Groceries 25%. If Clothing revenue is Rs. 9,00,000, find the total revenue.

  1. 20,50,000
  2. 19,50,000
  3. 19,00,000
  4. 20,00,000
Show answer

Answer: D. 45% of total = 9,00,000, so total = 9,00,000/0.45 = 20,00,000.

Sample Easy question 3

In a class of 50 students, 40% are girls. How many boys are there?

  1. 25
  2. 30
  3. 32
  4. 28
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Answer: B. Girls = 40% of 50 = 20, so boys = 50 - 20 = 30.

Sample Medium question 4

A company's revenue rose from Rs. 2,00,000 in 2022 to Rs. 2,50,000 in 2023. Find the percentage growth.

  1. 20%
  2. 25%
  3. 22%
  4. 28%
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Answer: B. Growth = 50,000, percentage = 50,000/2,00,000 × 100 = 25%.

Sample Medium question 5

In a survey of 300 people, 60% prefer tea. Among tea drinkers, 25% also drink coffee. How many people drink both tea and coffee?

  1. 48
  2. 42
  3. 40
  4. 45
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Answer: D. Tea drinkers = 60% of 300 = 180; both = 25% of 180 = 45.

Sample Medium question 6

A factory produced 500 units in week 1 and 620 units in week 2. Find the percentage increase.

  1. 24%
  2. 20%
  3. 22%
  4. 26%
Show answer

Answer: A. Increase = 120, percentage = 120/500 × 100 = 24%.

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