$($IRR calculation$)$ Determine the IRR on the following projects:

a$.$ An initial outlay of $$11,000$ resulting in a free cash flow of $$1,913$ at the end of each year for the next $11$ years

b$.$ An initial outlay of $$11,000$ resulting in a free cash flow of $$2,154$ at the end of each year for the next $18$ years

c$.$ An initial outlay of $$11,000$ resulting in a free cash flow of $$1,183$ at the end of each year for the next $12$ years

d$.$ An initial outlay of $$11,000$ resulting in a free cash flow of $$2,935$ at the end of each year for the next $6$ years

a$.$ What is the IRR of a project with an initial outlay of $$11,000$ resulting in a free cash flow of $$1,913$ at the end of year for the next $11$ years?

$\%($Round to two decimal places.$)$