Double Pie Chart DI for IBPS PO 2025, Check How to Solve Them

Data Interpretation (DI) is one of the most scoring and critical parts of the IBPS PO 2025 Quantitative Aptitude section. Among various types of DI sets, Double Pie Chart DI is frequently asked due to its visual appeal and data-rich nature. If tackled with confidence, these questions can help you gain an edge over others and boost your score in the quant section. In this blog, we’ll explore what Double Pie Chart DI is, how to solve them efficiently, and include some example-based tips to boost your preparation.

What is Double Pie Chart Data Interpretation Question?

A Double Pie Chart DI includes two pie charts displaying related data, which are often split into categories and subcategories. These charts may compare:

• Data of two different years
• Two departments or sectors
• Two companies or branches
• Any two metrics (e.g., revenue vs. profit)

Each chart shows the percentage distribution of a total value, and the questions are based on calculating values, comparisons, or ratios.

Start solving now and aim to score full marks in this topic!

In the IBPS PO Prelims and Mains exams, DI carries significant weightage: Prelims: 10–15 marks from DI sets (1–2 sets) and in Mains: 20–25 marks from DI (3–4 sets, including advanced DI).

Double Pie Chart DI is more common in Mains, especially as part of mixed DI sets.

Basic Mathematical Concepts used in Double Pie Chart DI

Before solving Double Pie Chart questions, you must learn to do basic mathematical operations like:

• Percentage calculations
• Basic arithmetic operations (addition, subtraction, multiplication, division)
• Ratio and proportion
• Conversion from percentage to actual values

Sample Question of Double Pie Chart DI

Directions: Answer the questions based on the information given below.

The pie chart given below shows the percentage distribution of number of mobiles manufactured by five different companies (A, B, C, D and E) in 2014 with respect to total number of mobiles manufactured by all the companies in 2014.

Note 1: Total number of mobiles manufactured by a company = Number of (sold) + unsold) mobiles by that company

Note 2: Total number of mobiles manufactured by all the five companies = 24800

Question 1: If 5% of the number of unsold phones of company A is defective, then find the number of non-defective unsold mobile phone by company A.

1. 713
2. 817
3. 822
4. 808
5. None of these

Question 2: Find the difference between the number of unsold mobiles by company D and the number of unsold mobiles by company E.

1. 2940
2. 3670
3. 4210
4. 3990
5. None of these

Question 3: The total number of unsold mobiles by companies A, B and C together is what percentage of the total of unsold mobiles by all five companies together?

1. 29.78%
2. 32.87%
3. 26.16%
4. 21.33%
5. 16.54%

Question 4: Find the difference between the average of the total number of mobiles manufactured by company C, D and E together and the average of the mobiles sold by company B, C and D together.

1. 2960
2. 3240
3. 2870
4. 3140
5. None of these

Question 5: The average time taken to manufacture a mobile by company C is 18 hours. Find the time taken by company C to manufacture 10% of its unsold mobiles.

1. 66.25 days
2. 68 days
3. 64 days
4. 67.5 days
5. None of these

Answer Keys and Solutions:

1) – B)

2) – B)

3) – C)

4) – A)

5) – E)

Solution 1: B)

Company	Total number of mobiles manufactured	Number of mobiles sold	Number of mobiles unsold
A	0.1 × 24800 = 2480	0.1 × 16200 = 1620	2480 – 1620 = 860
B	0.15 × 24800 = 3720	0.2 × 16200 = 3240	3720 – 3240 = 480
C	0.2 × 24800 = 4960	0.25 × 16200 = 4050	4960 – 4050 = 910
D	0.3 × 24800 = 7440	0.15 × 16200 = 2430	7440 – 2430 = 5010
E	0.25 × 24800 = 6200	0.3 × 16200 = 4860	6200 – 4860 = 1340
Total	24800	16200	8600

Requirednumber of non-defective unsold mobile phone by company A = 95% of 860 = 817 Hence, option b.

Solution 2: B)

Company	Total number of mobiles manufactured	Number of mobiles sold	Number of mobiles unsold
A	0.1 × 24800 = 2480	0.1 × 16200 = 1620	2480 – 1620 = 860
B	0.15 × 24800 = 3720	0.2 × 16200 = 3240	3720 – 3240 = 480
C	0.2 × 24800 = 4960	0.25 × 16200 = 4050	4960 – 4050 = 910

	D	0.3 × 24800 = 7440	0.15 × 16200 = 2430	7440 – 2430 = 5010
	E	0.25 × 24800 = 6200	0.3 × 16200 = 4860	6200 – 4860 = 1340
	Total	24800	16200	8600

Required difference = 5010 – 1340 = 3670 Hence, option b.

Solution 3: C)

Company	Total number of mobiles manufactured	Number of mobiles sold	Number of mobiles unsold
A	0.1 × 24800 = 2480	0.1 × 16200 = 1620	2480 – 1620 = 860
B	0.15 × 24800 = 3720	0.2 × 16200 = 3240	3720 – 3240 = 480
C	0.2 × 24800 = 4960	0.25 × 16200 = 4050	4960 – 4050 = 910
D	0.3 × 24800 = 7440	0.15 × 16200 = 2430	7440 – 2430 = 5010
E	0.25 × 24800 = 6200	0.3 × 16200 = 4860	6200 – 4860 = 1340
Total	24800	16200	8600

Required percentage = {(860 + 480 + 910)/8600} × 100 = 26.16% Hence, option c.

Solution 4: A)

Company	Total number of mobiles manufactured	Number of mobiles sold	Number of mobiles unsold
A	0.1 × 24800 = 2480	0.1 × 16200 = 1620	2480 – 1620 = 860
B	0.15 × 24800 = 3720	0.2 × 16200 = 3240	3720 – 3240 = 480
C	0.2 × 24800 = 4960	0.25 × 16200 = 4050	4960 – 4050 = 910
D	0.3 × 24800 = 7440	0.15 × 16200 = 2430	7440 – 2430 = 5010
E	0.25 × 24800 = 6200	0.3 × 16200 = 4860	6200 – 4860 = 1340
Total	24800	16200	8600

Required difference = (4960 + 7440 + 6200)/3 – (3240 + 4050 + 2430)/3

= 6200 – 3240 = 2960

Hence, option a.

Solution 5: E)

Company	Total number of mobiles manufactured	Number of mobiles sold	Number of mobiles unsold
A	0.1 × 24800 = 2480	0.1 × 16200 = 1620	2480 – 1620 = 860
B	0.15 × 24800 = 3720	0.2 × 16200 = 3240	3720 – 3240 = 480
C	0.2 × 24800 = 4960	0.25 × 16200 = 4050	4960 – 4050 = 910
D	0.3 × 24800 = 7440	0.15 × 16200 = 2430	7440 – 2430 = 5010
E	0.25 × 24800 = 6200	0.3 × 16200 = 4860	6200 – 4860 = 1340
Total	24800	16200	8600

Required time taken by company C = (10% of 910) × 18 = 1638 hours = 68.25 days Hence, option e.

Step-by-Step Strategy to Solve Double Pie Chart DI

Follow a step-by-step process provided below to approach the Double Pie Chart DI Question in IBPS PO Exam:

Step 1 – Analyze the Chart Carefully

Start by reading what each pie chart represents. Identify the total values given for each chart and how the data is divided into categories.

Step 2 – Note the Units and Base Values

Ensure you know whether the values are in thousands, lakhs, crores, or percentages. Some values are absolute; others are in percent.

Step 3 – Use a Table to Organize Data

Make a small table to write down each category’s actual values if percentages and totals are given. This helps in faster calculations.

Step 4 – Solve One Question at a Time

Don’t get overwhelmed. Focus on the data required for one question only. Avoid interpreting the entire chart at once.

Step 5 – Use Approximation (If Needed)

If the options are far apart, approximate calculations can help you save time. But only use this when the margin for error is high.

Final Tips for Double Pie Chart DI in IBPS PO 2025

Follow the tips provided below and practice regularly to master these questions and solve them in less than 5 minutes.

1. Practice different question types – Ratio, Difference, Percentage change, Averages, etc.
2. Use approximation wisely – especially when exact values aren’t required.
3. Avoid over-calculating – stick to what’s asked in the question.
4. Keep formulas ready – like % change = [(New – Old)/Old] × 100
5. Solve previous year questions – this gives insight into the difficulty level and pattern.

Conclusion

Double Pie Chart DI sets may look complex, but can be solved quickly with proper strategy and regular practice. Focus on mastering the basics of percentage, ratio, and approximation, and make it a habit to read charts smartly. You can also attempt our main topic tests for solving such DI sets and analyze your answers. With practice of 1 set of DI daily, you will be able to solve it quickly in the exam with accuracy.

It is advised not to spend more than 5 to 6 minutes solving one DI set and quickly move to other questions in the exam.

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Also Read:

IBPS PO Exam Pattern	IBPS PO Salary
IBPS PO Syllabus	IBPS PO Cut Off

Double Pie Chart DI for IBPS PO 2025: FAQs