# Repeated Distribution Method
Used when service departments render reciprocal services to each other (e.g., Stores helps Canteen, Canteen helps Stores).
## Procedure
1. Take one service department and distribute its total to all production and service departments in the given ratio.
2. Take the next service department (which now has an updated balance) and distribute it similarly.
3. Keep cycling through all service departments repeatedly.
4. Stop when the balance of any service department is less than ₹50 (or whatever immaterial cut-off is given). At that point, transfer the small balance only to production departments (rounded) to close out.
## Key Idea
Every service department keeps "giving back" cost to others until the iterations make the residual balance negligible.
## When to Use
- Mutual/reciprocal services exist.
- Question allows iterative arithmetic.
- Useful when only two service departments and quick recursion is feasible.