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Split group travel expenses fairly and calculate who owes whom.
A trip cost splitter divides shared expenses equally among group members and calculates the minimum number of payments needed to settle all debts.
Formula
Balance = Amount Paid − (Total Expenses / Number of People)Amount Paid = Total amount a person paid for the group
Total Expenses = Sum of all shared expenses
Number of People = Count of group members splitting costs
Worked Example
3 friends split $300 in expenses
Did you know? The 'minimum transfers' problem in group expense splitting is NP-hard in general, but greedy matching (pair biggest debtor with biggest creditor) produces optimal results for most practical cases (source: ACM Computing Surveys).
Sources
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