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GMAT Data Interpretation — practice questions

Explore 12 free Data Interpretation questions in GMAT Quantitative Aptitude. Open each question or exercise to read its content, reference answers and available explanation.

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Data Interpretation questions and exercises with answers

Showing questions 1–12 of 12.

Candidates who appeared from institute E across 2013-2017 were 1530, 1886, 1806, 1478 and 1645. What is the average number that appeared?Read the answer and worked solution →By what percentage do the total sales differ between Year 1 and Year 3? (Year 1 totals 15 + 12 + 9; Year 3 totals 14 + 15 + 13, figures in lakh rupees.)Read the answer and worked solution →In a table, sales of Product P for years 2020, 2021, 2022 are 120, 150, 180 units. % increase from 2020 to 2022:Read the answer and worked solution →If a pie chart shows 360° divided among four sectors with the largest being 144°, what percentage does the largest sector represent?Read the answer and worked solution →A bar chart shows monthly revenue: Jan ₹40, Feb ₹60, Mar ₹50, Apr ₹70 (in lakhs). Average monthly revenue:Read the answer and worked solution →In a class of 200 students, 30% study Hindi, 45% study English, and the rest study French. How many study French?Read the answer and worked solution →A line graph shows runs in 4 matches: 50, 80, 60, 90. By what percent did runs in the 4th match exceed the average of all 4?Read the answer and worked solution →Bar chart: Sales in 5 weeks 100, 120, 140, 160, 180. Ratio of weeks 1 + 2 to weeks 4 + 5:Read the answer and worked solution →In a survey, 40% liked tea only, 30% coffee only, 20% both. % who liked neither:Read the answer and worked solution →Pie chart: Family budget — Food 30%, Rent 25%, Utilities 15%, Savings 20%, Other 10%. If total income is ₹40,000, amount spent on Rent:Read the answer and worked solution →Table: Production (in tons) — Plant A 500, B 750, C 600, D 650. % share of Plant B:Read the answer and worked solution →Bar chart: profits over 5 years average to ₹40 cr; if 4 years have profits 30, 35, 50, 45 cr, the 5th year's profit is:Read the answer and worked solution →

Worked practice questions

Candidates who appeared from institute E across 2013-2017 were 1530, 1886, 1806, 1478 and 1645. What is the average number that appeared?

  1. 1586
  2. 1759
  3. 1924
  4. 1669
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Correct answer: D. 1669

1. Sum = 1530 + 1886 + 1806 + 1478 + 1645 = 8345. 2. There are 5 years, so divide by 5. 3. Average = 8345 ÷ 5 = **1669**. _Source: IBPS RRB Officer Scale I Prelims PYQ (Examrace), Q.57_

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By what percentage do the total sales differ between Year 1 and Year 3? (Year 1 totals 15 + 12 + 9; Year 3 totals 14 + 15 + 13, figures in lakh rupees.)

  1. 18%
  2. 15.67%
  3. 19.67%
  4. 16.67%
Show answer and solution

Correct answer: D. 16.67%

1. Year 1 total = 15 + 12 + 9 = 36; Year 3 total = 14 + 15 + 13 = 42. 2. Difference = 42 − 36 = 6. 3. Percentage = 6/36 × 100 = 16.67%. _Source: RRB Group D CEN-02/2018 PYQ, Q.58._

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In a table, sales of Product P for years 2020, 2021, 2022 are 120, 150, 180 units. % increase from 2020 to 2022:

  1. 40%
  2. 50%
  3. 60%
  4. 30%
Show answer and solution

Correct answer: B. 50%

1. Increase = 180 − 120 = 60. 2. % change = 60 / 120 × 100. 3. = 50%. _Source: jkchrome DI QB, p.1 — table % growth_

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More Quantitative Aptitude topics

ProbabilityPermutations and CombinationsAlgebraModern MathematicsQuantitative AptitudeAveragesInterestProfit and Loss