Earth's Treasures Mining Co. acquired mineral rights for $63,000,000. The mineral deposit is estimated at 90,000,000 tons. During the current year, 21,600,000 tons w mined and sold. a. Determine the depletion rate. If required, round your answer to two decimal places. q per ton b. Determine the amount of depletion expense for the current year. \$ c. Journalize the adjusting entry on December 31 to recognize the depletion expense. If an amount box does not require an entry, leave it blank. Dec. 31