This is an independent topic guide, not the official syllabus. Compare it with the current paper outline and rules published by the examination authority.
01 / UNDERSTANDING
Learning objectives
Study angle-to-share conversion, percentage sectors and comparisons across different bases. Explain why proportional pictures do not directly provide absolute values without the accompanying total.
02 / UNDERSTANDING
The concept in context
A full pie represents the whole and has 360 degrees. A sector’s fraction is its angle divided by 360, so its amount equals that fraction multiplied by the stated total. A percentage-labelled sector uses the same part-to-whole relationship without requiring the intermediate angle conversion.
03 / UNDERSTANDING
A worked learning case
Original educational case. In an original expenditure chart with a total of ₹72,000, a 90-degree sector represents one quarter, or ₹18,000. A second chart totals ₹1,20,000 and has a 72-degree sector worth ₹24,000. The second sector has a smaller angle but a larger amount because its overall base is greater.
ORIGINAL EDUCATIONAL PRACTICE
Try it before you check.
Original practice: A 60-degree sector belongs to a pie representing 900 items. How many items does it represent?
Show the answer and reasoning
150 items.
The sector is 60/360, or one sixth, of the complete circle. One sixth of 900 is 150. Using 60 as a percentage would incorrectly treat an angle measurement as a percent share. The calculation requires both the sector angle and the total represented by the full pie.
Two traps to watch for.
- Treating degrees as if they were percentages.
- Comparing sector amounts across charts without checking totals.
YOUR TOPIC-SPECIFIC LEARNING MAP
Your revision map
Convert each sector into a fraction.
Write the full-pie total beside the chart.
Check whether all category amounts sum correctly.
Explain the idea, apply it to a new situation, then check what changed in your reasoning.
BANKERS TUTORIAL · SOURCE NOTES
Keep the source alongside your notes.
Official links provide subject context and authoritative reference material. This guide’s explanation, scenario and question are original Bankers Tutorial learning content.
- sbi.bank.in https://sbi.bank.in/web/careers/current-openings
- sbi.bank.in https://sbi.bank.in/webfiles/uploads/files_2627/09/SBI_JA-Customer_Support_Sales-IH_Pre-2026-27_Eng.pdf
For SBI preparation, check the current official notice before relying on changing dates, rules or examination requirements.
