a. Determine the depletion rate.
b. Determine the amount of depletion expense for the current year.
c. Journalize the adjusting entry on December 31 to recognize the depletion expense.
Answer:
a. $0.30 per ton = $127,500,000 ÷ 425,000,000 tons
b. $12,600,000 = 42,000,000 tons × $0.30 per ton

c. Dec. 31 Depletion Expense 12,600,000
Accumulated Depletion 12,600,000
Depletion of mineral deposit.