You have the following information about Burgundy Basins, a sink manufacturer.

Equity shares outstanding stock price per share Yield to maturity on debt Book value of interest$-$bearing debt Coupon interest rate on debt Market value of debt Book value of equity cost of equity capital Tax rate

Burgundy is contemplating what for the company is an average$-$risk investment costing $$40$ million and promising an annual ATCF of $$6\mathrm{.}4$ million in perpetuity.

a$.$ What is the internal rate of return on the investment?

Internal rate of return

$\%$

b$.$ What is Burgundy's weighted$-$average cost of capital?

Note: Round your answer to $1$ decimal place.

Weighted$-$average cost

$\%$