how to calculate the smaller IRR

Howell Petroleum, Incorporated, is trying to evaluate a generation project with the following cash fiows: a. If the company requires a return of 8 percent on its investments, what is the NPV of the project? Note: Do not round intermediate calculations and round your answer to 2 decimal places, e.9, 32.16. b. Compute the IRRs for this project. Notes Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.9. 32.16. Enter the larger IRR in the first answer box and the smaller IRR in the second answer box. If you can only calculate one IRR, enter it in both boxes to recelve partial credit. A negative answer should have a minus sign