a Using the revised information provided by Wilson the net present value NPV and internal rate of return IRR for each machine can be calculated using Excel The calculations are shown belowNakoiDakotaB

He may also want to conduct sensitivity analyses to see how changes in other variables, such as selling price and cash costs, would affect the NPV and IRR for each machine. This can help him better understand the risks and uncertainties associated with each investment option and make a more informed decision. Overall, it is important for Wilson to conduct thorough and robust analyses before making any investment decisions.