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SSC & BANK EXAMS: QUANTITATIVE APTITUDE · DATA INTERPRETATION

Data interpretation (table)

Read the right cells first. % change = (new − old)/old × 100. “A is what % of B” = A/B × 100.

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Worked examples

Example 1 · level 1

Students passing the exam. 2020: Boys 260, Girls 90; 2021: Boys 200, Girls 80; 2022: Boys 140, Girls 200; 2023: Boys 130, Girls 220; 2024: Boys 90, Girls 90. In 2023, the figure for Girls is what percent of that for Boys? (rounded to 2 decimals)

  1. 59.09%
  2. 161.23%
  3. 179.23%
  4. 169.23%
Show solution
  1. 220 ÷ 130 × 100 = 169.23%.

Answer: 169.23%

Example 2 · level 2

Wheat production (in lakh tonnes). 2020: Punjab 290, Haryana 240; 2021: Punjab 90, Haryana 290; 2022: Punjab 100, Haryana 180; 2023: Punjab 110, Haryana 190; 2024: Punjab 110, Haryana 270. What is the percentage change for Haryana from 2022 to 2024? (rounded to 2 decimals)

  1. 60% increase
  2. 50% increase
  3. 50% decrease
  4. 33.33% increase
Show solution
  1. Change = 270 − 180 = 90.
  2. 90 ÷ 180 × 100 = 50% → 50% increase.

Answer: 50% increase

Example 3 · level 3

Wheat production (in lakh tonnes). 2020: Punjab 120, Haryana 110; 2021: Punjab 300, Haryana 220; 2022: Punjab 300, Haryana 130; 2023: Punjab 130, Haryana 120; 2024: Punjab 100, Haryana 90. What is the ratio of the total for Punjab to the total for Haryana in the years 2020, 2024 taken together?

  1. 23 : 20
  2. 22 : 21
  3. 10 : 11
  4. 11 : 10
Show solution
  1. Punjab: 120 + 100 = 220.
  2. Haryana: 110 + 90 = 200.
  3. Ratio = 220 : 200 = 11 : 10.

Answer: 11 : 10

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