Order settlement

Please go through below condition i wanan know how price will be updated.

Planned cost -25000

Actual cost u2013 25120

Planned Vs Actual difference = 120 Rs

Available Inventory Stock = 100 MT

Current inventory price= 7500 Rs.

Plz guide me what will the new price, im confuse

Plz explain me in Details by Example. Whether system use last inventory stock and last price difference to upload inventory.