a. For which of these projects is the IRR rule reliable? b. Estimate the IRR for each project (to the nearest 1% ). c. What is the NPV of each project if the cost of capital is 5% ? 20% ? 50% ? c. What is the NPV of each project if the cost of capital is 5% ? 20% ? 50% ? The NPV for project 1 for a cost of capital of 5% is $. (Round to the nearest cent.) The NPV for project 1 for a cost of capital of 20% is $. (Round to the nearest cent.) The NPV for project 1 for a cost of capital of 50% is $. (Round to the nearest cent.) The NPV for project 2 for a cost of capital of 5% is \$ . (Round to the nearest cent.) The NPV for project 2 for a cost of capital of 20% is . (Round to the nearest cent.) The NPV for project 2 for a cost of capital of 50% is $. (Round to the nearest cent.) The NPV for project 3 for a cost of capital of 5% is $. (Round to the nearest cent.) The NPV for project 3 for a cost of capital of 20% is \$ . (Round to the nearest cent.) The NPV for project 3 for a cost of capital of 50% is $ (Round to the nearest cent.)