Internal Rate of Return The Tidwell Company is considering buying a new machine costing $18,000. Tidwell estimates that this machine will save $5,000 per year in cash operating expenses for the next five years. If the machine has no salvage value at the end of five years and the discount rate used by Tidwell is 8%, compute the machine intemal rate of return. Payback Period Paranomal Incorporated is considering investing in a project with the following initial cost and projected cash inflows. The company has a 14 percent cost of capital. - Compute the project's payback period