Benediction Cummerbund LLC is considering expanding its line of tuxedos to include a new

"disco" selection. In order to add this line, they will need to invest $$50,000$ up front. This project

is expected to increase the cash flows for the company by $$10,000$ per year for $8$ years.

a$.$ If the company's cost of capital is $12\%,$ should they invest in this line?

b$.$ At what cost of capital would they be indifferent in investing or not investing?