Pariksha SaathiQuantitative Aptitude
Data Interpretation: Practice Questions with Answers
14 practice questions on Data Interpretation, with answers; most also have an explanation or a worked solution. Try each one before you open its answer.
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Q.1
Using the same sales table (2020 – 50, 2021 – 60, 2022 – 75, 2023 – 90, 2024 – 120, in ₹ lakhs), in which year was the percentage increase in sales over the previous year the highest?
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Answer: 2024
Solution:
- 2020→2021: (10/50)×100 = 20%. 2021→2022: (15/60)×100 = 25%. 2022→2023: (15/75)×100 = 20%. 2023→2024: (30/90)×100 ≈ 33.3%.
- The highest is 2023→2024, so 2024 had the highest percentage increase over its previous year.
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Q.2
A store sells the same product across 3 regions: Region A sold 200 units at ₹50 each, Region B sold 150 units at ₹60 each, and Region C sold 100 units at ₹80 each. Find the average selling price per unit across all three regions combined.
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Answer: ₹60 per unit
Solution:
- This needs a weighted average (by units sold), not a simple average of the three prices.
- Total revenue = (200×50) + (150×60) + (100×80) = 10,000 + 9,000 + 8,000 = 27,000.
- Total units = 200 + 150 + 100 = 450.
- Average price per unit = 27,000 / 450 = ₹60.
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Q.3
A company’s annual sales (in ₹ lakhs) were: 2020 – 50, 2021 – 60, 2022 – 75, 2023 – 90, 2024 – 120. Find the percentage increase in sales from 2020 to 2021.
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Answer: 20%
Solution:
- Increase = 60 − 50 = 10.
- Percentage increase = (10/50) × 100 = 20%.
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Q.4
A company's sales and costs (₹ lakh) were: 2021 – Sales 60, Cost 45; 2022 – Sales 75, Cost 50. Find the profit margin (profit as a percentage of sales) for 2022.
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Answer: ≈ 33.3%
Solution:
- Profit for 2022 = Sales − Cost = 75 − 50 = 25.
- Profit margin = (Profit / Sales) × 100 = (25 / 75) × 100
- ≈ 33.3%
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Q.5
Using the same sales table (2020 – 50, 2021 – 60, 2022 – 75, 2023 – 90, 2024 – 120, in ₹ lakhs), find the average annual sales over the five years.
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Answer: ₹79 lakh
Solution:
- Sum = 50 + 60 + 75 + 90 + 120 = 395.
- Average = 395 / 5 = 79.
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Q.6
Using the same sales table (2020 – 50, 2021 – 60, 2022 – 75, 2023 – 90, 2024 – 120, in ₹ lakhs), find the ratio of sales in 2022 to sales in 2024.
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Answer: 5 : 8
Solution:
- Ratio = 75 : 120.
- Dividing both terms by their HCF, 15: 75÷15 : 120÷15 = 5 : 8.
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Q.7
A shop's monthly sales (₹ thousand) for January to May totalled ₹310. The figures for January, February, April and May were 40, 55, 65 and 70 respectively, and March's figure is missing. Find March's sales.
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Answer: ₹80 thousand
Solution:
- Sum of the known four months = 40 + 55 + 65 + 70 = 230.
- March's sales = total − known sum = 310 − 230
- = ₹80 thousand
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Q.8
A 4-quarter table totals ₹500 crore. Q1, Q2 and Q3 were ₹100, ₹140 and ₹130 crore. Find Q4.
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Q.9
A store sells 3 products: Product X — 50 units at ₹20 each; Product Y — 30 units at ₹40 each; Product Z — 20 units at ₹100 each. Find the average price per unit sold across all three.
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Answer: ₹42. Total revenue = 1,000+1,200+2,000 = 4,200; total units = 100.
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Q.10
Using the same sales table, find the ratio of sales in 2020 to sales in 2023.
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Q.11
Using the original sales table (2020–2024: 50, 60, 75, 90, 120, totalling 395), find what percentage of the 5-year total came from 2024 alone.
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Q.12
Using the same sales table, find the total sales over 2020, 2021 and 2022 combined.
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Q.13
Using the same sales table (2020: 50, 2021: 60, 2022: 75, 2023: 90, 2024: 120, in ₹ lakhs), find the percentage increase in sales from 2022 to 2023.
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Q.14
A company's sales and cost for 2023 were ₹90 lakh and ₹65 lakh respectively. Find the profit margin (profit as a percentage of sales).
How these questions were made
Written by Mahesh Srivastava, Founder of Pariksha Saathi. Published: 2026-10-03.