Recall from P11-29 that when the market price of gold is C$1,562.50 per ounce (C$ stands for Canadian dollars) the NPV for Maritime Resources Corp.a Canadian mining firm that was reopening an old gold mine that had ceased operations in the past due to low gold pricesis C$44,188,992. Reopening the mine would require an up-front capital expenditure of C$67.8 million and annual operating expenses of C$19.42 million. Maritime expects that over a five-year operating life it can recover 174,000 ounces of gold from the mine and that the project will have no terminal value. Maritime uses straight-line depreciation, has a 21% corporate tax rate, and has an 11.2% cost of capital. Before moving forward with the project, Maritime would like to determine the sensitivity of its capital budgeting decision to the market price of gold, which could fluctuate over the five-year project life.

1. Calculate the IRR for the gold mine project if the price of gold drops 10%.
2. Calculate the NPV for the gold mine project if the price of gold drops 10%.
3. Calculate the IRR for the gold mine project if the price of gold drops 20%.
4. Calculate the NPV for the gold mine project if the price of gold drops 20%.
5. Below what price per ounce of gold is Maritimes reopening of its old gold mine no longer acceptable?