It is permissible to use excel just keep getting a num error

Consider the following two mutually exclusive projects being considered by an agency. The agency's MARR is 4% per year and the projects have a service life of 5 years. Answer the following questions. a. Based on the PW, the project that is more economical is Project (Enter the project number). b. Calculate the IRR of each alternative (use the trial-and-error method) The IRR of Project 1 is % (Round to the nearest one decimal place) The IRR of Project 2 is % (Round to the nearest one decimal place) c. Perform the incremental IRR analysis to determine the project that is more economical: Incremental IRR =% (Round to the nearest one decimal place); Therefore, based on the incremental IRR, Project is more economical