Answer:
1) total cost $3,209,909
journal entries:
copper deposit 3,209,909 debit
cash 2,800,000 credit
restoration liability 409,909 credit
Step-by-step explanation:
mine deposit: 2,000,000 land
+ 800,000 extraction
+ 409,909 restoration cost
3,209,909 total cost
expected monetary value of the restoration cost:
![\left[\begin{array}{cccc}$Electrical&Return&Probability&Weight\\$One&500,000&0.25&125,000\\$Second&600,000&0.4&240,000\\$Third&800,000&0.35&280,000\\$Total&&1&645,000\\\end{array}\right]](https://img.qammunity.org/2021/formulas/business/college/ofgdgxgmr29i59t7jyoepohqct7ghu9rt3.png)
preset value of restoration cost:
Maturity $645,000.00
time 4.00
rate 0.12000
PV 409,909.1606