This Bankers Tutorial article is independent educational material. Examples are illustrative, and changing rules or examination requirements should be checked at the official source.
01 / UNDERSTANDING
Understand the idea
A ratio is a compact description of fairness under a stated rule. A part diagram explains the allocation more clearly than an unexplained string of cross-products.
02 / UNDERSTANDING
The concept in context
A ratio compares quantities using a common scale. In a split of 2:3, the combined total has five equal parts, so the groups receive two fifths and three fifths. The ratio 2:3 does not mean that the first group receives two thirds of the entire total.
Ratios can be scaled without changing their relationship, but combining ratios requires a shared quantity. When A:B and B:C are given, equalise the B parts before writing A:B:C. Check both original comparisons afterwards; a plausible-looking three-part answer can still fail one of the conditions.
03 / UNDERSTANDING
A worked learning case
Original educational case. Two training teams share 150 practice booklets in the ratio 2:3. Five parts represent 150, so one part is 30 and the teams receive 60 and 90. If team membership changes, the old ratio cannot automatically be retained: the problem must state whether allocation still follows the original ratio or a new rule.
ORIGINAL EDUCATIONAL PRACTICE
Try it before you check.
Original practice: Divide ₹560 in the ratio 3:4. What is the smaller share?
Show the answer and reasoning
₹240.
The total number of parts is 3 + 4 = 7. Each part is ₹560 ÷ 7 = ₹80, and the smaller group receives three parts, or ₹240. The other share is ₹320. Adding the shares verifies the total, while 240:320 simplifies back to the required 3:4.
Two traps to watch for.
- Using one group’s parts as the combined denominator.
- Combining two ratios without equalising their common term.
YOUR TOPIC-SPECIFIC LEARNING MAP
Turn understanding into practice
Write the total number of parts.
Find one part before finding shares.
Check the reconstructed ratio and total.
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.
