Answer:
The answer is given below;
Explanation:
1.$6,000,000/120,000=$50*25,000=$1,250,000
2.this method is called units of digits method for depletion.
The accounting treatment shall be;
Depletion Expense Dr.$1,250,000
Accumulated Depletion Cr.$1,250,000
When the asset will retire, the accumulated depletion will be eliminated with corresponding effect to mine