Compare equal and weighted contributions
See this course’s project requirements
A fictional shared-cost agreement and balanced settlement ledger with equal/weighted splits, individual exclusions and departure reconciliation.
Keep your working files in your own notebook or software. Save a private description, checklist, and work link in My Proof.
What to include
- A shared/personal expense register with explicit participants.
- An equal/weighted contribution comparison and rule record.
- A sum-zero shared-expense settlement ledger.
- A two-transfer settlement plan and post-settlement balance check.
- A refund/departure adjustment log with revised settlement balances.
- A complete fictional shared-finance agreement and audit record.
Review and revise
Use these criteria to check your work and choose what to improve.
- All supplied records reconcile and the decision uses the named case rules.
- Calculations show units, intermediate values and a second check.
- Changed-input practice revises the affected result and identifies uncertainty.
- The final project combines six lesson records, separates fictional assumptions from current rules, and states a supported next step.
Want more background?
The idea in everyday life
This is an original fictional practice case. No account, payment, personal record or outside participation is required. Two fictional adults agree rent $900 split by incomes $2,000 and $1,000; groceries $300 split equally.
Fairness is an agreed rule, not a mathematical claim that one allocation is universally right.
Compare equal and weighted contributions — worked practice
Fairness is an agreed rule, not a mathematical claim that one allocation is universally right.
Use paper or a local table; label all amounts as fictional USD unless the case names another unit. Two fictional adults agree rent $900 split by incomes $2,000 and $1,000; groceries $300 split equally.
Agreed participant weights
Paste at A1.
| APerson | BMonthly income weight USD | CRent allocation rule | DGrocery allocation rule |
|---|---|---|---|
| A | 2000 | Income weighted | Equal |
| B | 1000 | Income weighted | Equal |
Copy as plain text
Shared expense totals
Paste at A5.
| AExpense | BUSD |
|---|---|
| Rent | 900 |
| Groceries | 300 |
Copy as plain text
1. Step 1: Compute the income weights for rent
Compute the income weights for rent.
You should see: Two-thirds and one-third.
Fairness is an agreed rule, not a mathematical claim that one allocation is universally right.
2. Step 2: Allocate rent using those weights
Allocate rent using those weights.
You should see: A $600; B $300.
Keep this intermediate result so the final decision can be checked.
3. Step 3: Add equal groceries
Add equal groceries.
You should see: Each owes $150 groceries.
Keep this intermediate result so the final decision can be checked.
4. Step 4: Compare combined obligations and an equal alternative
Compare combined obligations and an equal alternative.
You should see: Weighted agreement A $750/B $450; a fully equal $1,200 split would be $600 each.
Keep this intermediate result so the final decision can be checked.
What to finish
An equal/weighted contribution comparison and rule record.
Watch for this
Applying the rent weighting to every category without consent.
How can I tell I understand it?
Calculate category-specific equal and weighted contributions under an explicit agreement on the supplied changed case while preserving the stated rule and checking the final record.
Quick knowledge check
Answer all 3 questions. Get at least 2 right and the lesson completes automatically.
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Pass the check. We’ll save the progress.
Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.
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Sources and further reading
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Source & access notes · checked 2026-10-01
Official page opened/read during Money expansion authoring; checked the relevant concept and access state. These sources do not establish funding eligibility.
Access: Readable official webpage inspected with the web reader on 2026-10-01. No interactive-tool operation is claimed.
Reuse: Original fictional practice, questions and calculations; paraphrased concepts with a source link. No source exercise copied.
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