Everly Corporation acquires a coal mine at a cost of $400,000. Intangible development costs total $100,000. After extraction has occurred, Everly must restore the property (estimated fair value of the obligation is $80,000), after which it can be sold for $160,000. Everly estimates that 4,000 tons of coal can be extracted.

The journal entry is shown below:

Inventory A/c Dr $73,500

To Accumulated depletion A/c $73,500

(Being the depletion is recorded)

The computation is shown below

First we have to compute the depletion per ton which is shown below:

= (Acquired cost of coal mine + Intangible development costs + fair value of the obligation - Sale value) : (Number of estimated tons of coal extracted)

= ($400,000 + $100,000 + $80,000 - $160,000) : (4,000 tons)

= $105

Now if 700 are extracted in first year, so the depletion would be

= 700 * $105

= $73,500