please answer a b c questions

(IRR calculation) Determine to the nearest percent the IRR on the following projects: a. An initial outlay of $12,000 resulting in a free cash flow of $2,000 at the end of year 1, $7,000 at the end of year 2, and $8,000 at the end of year 3 b. An initial outlay of $12,000 resulting in a free cash flow of $8,000 at the end of year 1, $7,000 at the end of year 2, and $2,000 at the end of year 3 c. An initial outlay of $12,000 resulting in a free cash flow of $2,000 at the end of years 1 through 5 and $7,000 at the end of year 6 a. What is the IRR of a project with an initial outlay of $12,000 resulting in a free cash flow of $2,000 at the end of year 1, $7,000 at the end of year 2, and $8,000 at the end of year 3? % (Round to two decimal places.)