On July 1, 2010, Hurtig Inc. invested $720,000 in a mine estimated to have 800,000 tons of

Question:

On July 1, 2010, Hurtig Inc. invested $720,000 in a mine estimated to have 800,000 tons of ore of uniform grade. During the last 6 months of 2010, 100,000 tons of ore were mined and sold.
Instructions
(a) Prepare the journal entry to record depletion expense.
(b) Assume that the 100,000 tons of ore were mined, but only 80,000 units were sold. How are the costs applicable to the 20,000 unsold units reported?