al cost purchase price + other fees 75,900 + 2,838 = $78,738 The total depreciation is the decrease in value from the total cost of an asset over its useful life. It is calculated as the difference of the total cost and the salvage value. The drilling rig has a salvage value of $12,945. Use the calculated total cost and the salvage value to find the total amount of depreciation (In S). total depreciation total cost - salvage value Enter an exact number Submit Skip (you cannot come back)