UV has raised $100,000 through the issue of two irredeemable financial instruments:•  6% debentures with a...

UV has raised $100,000 through the issue of two irredeemable financial instruments:

•  6% debentures with a current market value of $101.50 per $100 nominal value; and

•  8% preference shares with a current share price of $2.20 each.

The corporate income tax rate is 20% 

What is the post tax cost of debt for each of these instruments?