The worked question on this page is original educational practice. It is not represented as a question from an official previous-year examination paper.
01 / UNDERSTANDING
Review the question
Create an original numerical question that changes only the time unit. Show the intermediate conversion; an answer without the assumption may conceal an error even if the final number looks plausible. Add a distractor produced by multiplying six years instead of half a year. Ask the learner to diagnose the error, not just reject the number. This makes the worked answer test unit reasoning and demonstrates why a correct formula can still be misapplied.
02 / UNDERSTANDING
The concept in context
A percentage change uses an identified base, while a percentage-point change compares two percentages directly. Quoted rates also require context about compounding and contractual conventions. Study examples should state their assumptions explicitly and should not be presented as current product quotations or promised returns.
03 / UNDERSTANDING
A worked learning case
A classroom exercise uses ₹10,000 at an assumed annual simple rate of six per cent for half a year. Interest is ₹300 when the time is expressed as 0.5 years. A learner who enters six months as six years obtains an implausible answer, revealing a unit mismatch rather than a difficult formula.
ORIGINAL EDUCATIONAL PRACTICE
Try it before you check.
What is the simple interest on ₹10,000 at an assumed annual six per cent for half a year?
Show the answer and reasoning
₹300.
Convert six per cent to 0.06 and half a year to 0.5, then multiply 10,000 by 0.06 by 0.5. The result is ₹300. This is a simplified educational calculation; the actual amount for a financial product depends on its contractual conventions and applicable terms.
Two traps to watch for.
- Combining a monthly time count with an annual rate unchanged.
- Confusing a percentage-point rise with a percentage increase.
YOUR TOPIC-SPECIFIC LEARNING MAP
Learn from the attempt
Label principal, rate period and elapsed time before calculating.
Solve the assumed simple-interest example using consistent annual units.
Compare the answer with a rough reasonableness estimate.
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.
- iibf.org.in https://iibf.org.in/diploma-banking-finance
- www.iibf.org.in https://www.iibf.org.in/documents/RulesSyllabus/2026/42_DBF-Final_23_2_26%20_Final_website_12_03_2026.pdf
- www.rbi.org.in https://www.rbi.org.in/commonperson/English/Scripts/PressReleases.aspx?Id=2123
For DBF preparation, check the current official notice before relying on changing dates, rules or examination requirements.
