Exercise 10-11 al-a2 (Part Level Submission) (Video) On July 1, 2020, Sheffield Inc. invested $629,280 in a mine estimated to have 828,000 tons of core of uniform grade. During the last 6 months of 2020, 119,000 tons of ore were mined. (an) Calculate depletion cost per unit. (Round answer to 2 decimal places, .g. 0.50.) Depletion cost per unit Click if you would like to Show Work for this question: Open Show Work