Mansfield Company is considering a project that would have a ten-year life. It would require a $1,680,000 investment in equipment. At the end of ten years, the equipment would have no salvage value. Net operating income for each year of the project is: $2,000,000 1,350,000 650,000 Sales Variable expenses Contribution margin Fixed expenses: Fixed out-of-pocket cash expenses Depreciation Net operating income $350,000 168,000 518,000 $ 132,000 The company's required rate of return is 10% a. Compute the project's net present value, to the nearest dollar b. Compute the project's internal rate of return to the nearest whole percent. c. Compute the project's payback period, rounded to decimal places if necessary. d. Compute the project's simple rate of return, to the nearest whole percent