9 questions from actual RRB NTPC papers · all shown free · click option to reveal solution
Study the following pie chart data showing the distribution of smartphone sales across five brands in Q4 2023. The total sales value was ₹5000 crores.
| Brand | Percentage of Total Sales |
|---|---|
| Apple | 28% |
| Samsung | 24% |
| Xiaomi | 22% |
| OnePlus | 16% |
| Realme | 10% |
| Total | 100% |
Additional Information: - Apple's sales increased by 25% from Q3 to Q4 2023 - Samsung's sales decreased by 20% from Q3 to Q4 2023
Study the following pie chart data and answer the questions. A manufacturing company's annual production is distributed across five product categories. The pie chart shows the percentage distribution of total production (in units) across these categories:
| Product Category | Percentage of Total Production |
|---|---|
| Electronics | 28% |
| Textiles | 22% |
| Chemicals | 18% |
| Machinery | 20% |
| Ceramics | 12% |
| Total | 100% |
The total annual production of the company is 50,000 units.
Pie charts are circular diagrams that show how a whole is divided into parts. Think of a pizza cut into slices - each slice represents a portion of the total. In SSC CGL, pie charts appear in 80% of papers, usually with 2-3 questions worth 6-9 marks.
The complete circle equals 360 degrees. Each part is shown as a sector (slice). The angle of each sector is proportional to the data it represents. All sectors together must equal 360 degrees or 100%.
Block:
SSC asks three main question types. First, direct calculations from given percentages or angles. Second, comparison questions asking 'how much more' or 'what is the ratio'. Third, application problems combining pie charts with other topics like profit-loss or averages. Powerful Shortcut #1 - The 36° Rule: Since 360° = 100%, then 36° = 10%.
This means 18° = 5%, 72° = 20%, 108° = 30%. Memorize these common angle-percentage pairs to solve questions in 10 seconds. Shortcut #2 - Direct Proportion Method: Instead of calculating percentages, use direct ratios. If sector A has 60° and sector B has 120°, then B is exactly double A. No complex calculations needed.
Marketing angle = 72°
Using formula: Value = (72°/360°) × 50,000
= (1/5) × 50,000 = ₹10,000 Alternate Quick Method: 72° = 20% (using 36° rule), so 20% of 50,000 = ₹10,000 Worked Example 2: In a pie chart showing student preferences, Cricket gets 126°, Football gets 90°, Hockey gets 54°. What percentage more students prefer Cricket over Hockey?
Cricket = 126°, Hockey = 54°
Difference = 126° - 54° = 72°
72° = 20% (using shortcut)
Hockey percentage = 54°/360° = 15%
Cricket percentage = 126°/360° = 35%
Cricket is 35% - 15% = 20% more than Hockey Shortcut #3 - The Remainder Trick: When some sectors are given and you need to find the remaining sector, don't calculate each percentage. Simply subtract given angles from 360°. If three sectors are 80°, 120°, and 70°, the fourth sector is 360° - 270° = 90°. Most Common Trap - The Percentage vs Angle Confusion: Students often mix up
percentages and when to use angles. Remember: if the question gives percentages, convert to angles by multiplying by 3.6.
If it gives angles, convert to percentages by dividing by 3.6. This single mistake costs students 2-3 marks per paper. Another Critical Error: Students forget that pie charts represent parts of a whole.
You cannot add values from two different pie charts directly unless they have the same total value. Always check if the total values are same before making comparisons. Pro Tip for Complex Questions: When pie charts combine with other topics, first extract the basic values from the pie chart, then apply the second concept.
Don't try to solve everything in one step.
24graded MCQs · easy to hard · full solution & trap analysis · showing 20 of 24
Study the following pie chart data showing the distribution of sales across five product categories in a retail company for the year 2023. The total annual sales were ₹5,000 lakhs.
| Product Category | Percentage of Total Sales |
|---|---|
| Electronics | 28% |
| Clothing | 22% |
| Home & Garden | 18% |
| Sports & Outdoors | 16% |
| Books & Media | 16% |
| Total | 100% |
Study the following pie chart data showing the distribution of monthly sales across five product categories in a retail store. The total monthly sales is ₹50,000.
| Product Category | Percentage of Total Sales |
|---|---|
| Electronics | 28% |
| Clothing | 22% |
| Home & Kitchen | 18% |
| Books & Stationery | 16% |
| Sports & Outdoors | 16% |
| Total | 100% |
Study the following pie chart data showing the distribution of sales across five product categories in a retail company for the year 2023. The total annual sales were ₹5,000 lakhs.
| Product Category | Percentage of Total Sales |
|---|---|
| Electronics | 28% |
| Clothing | 22% |
| Home & Kitchen | 18% |
| Sports & Outdoors | 16% |
| Books & Media | 16% |
| TOTAL | 100% |
Study the following pie chart data showing the distribution of smartphone sales across five brands in Q3 2024. The total sales value is ₹5000 crores.
| Brand | Percentage of Total Sales |
|---|---|
| Apple | 28% |
| Samsung | 24% |
| Xiaomi | 22% |
| OnePlus | 16% |
| Realme | 10% |
| Total | 100% |
Additional Information: - Q2 2024 total sales: ₹4000 crores - Apple's Q2 2024 sales: ₹980 crores - Samsung's Q2 2024 sales: ₹880 crores
Study the following pie chart data representing the distribution of annual production (in thousand units) across six manufacturing divisions of TechCorp Industries for the year 2023.
| Division | Percentage of Total | Production (in thousand units) |
|---|---|---|
| Electronics | 28% | 840 |
| Automotive | 22% | 660 |
| Textiles | 18% | 540 |
| Chemicals | 16% | 480 |
| Pharmaceuticals | 10% | 300 |
| Packaging | 6% | 180 |
| TOTAL | 100% | 3000 |
Note: Total annual production = 3000 thousand units. The company aims to increase production by 15% in 2024 across all divisions proportionally.
Study the following table showing the distribution of smartphone sales across different brands in Q4 2023 and answer the questions.
| Brand | Q4 2023 Sales (%) | Price per Unit (₹) | Units Sold (thousands) |
|---|---|---|---|
| Apple | 18 | 75,000 | 24 |
| Samsung | 22 | 45,000 | 48.89 |
| Xiaomi | 16 | 28,000 | 57.14 |
| OnePlus | 12 | 52,000 | 23.08 |
| Vivo | 14 | 32,000 | 43.75 |
| Oppo | 10 | 35,000 | 28.57 |
| Others | 8 | 25,000 | 32 |
Note: Total market size in Q4 2023 = ₹10,000 crores. All percentages sum to 100%.
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