On 15 November 2018, Resources Ltd issued $500,000,000 aggregate principal amount of $1,000 per value fixed interest bonds payable carrying quarterly coupon rate of 4.75%. They are maturing on 15 November 2025. The bonds have a market value per bond of 112.5 as at 15 November 2018. REQUIRED: If the tax rate is 30%, find the before tax and after-tax cost of debt using the yield to maturity approach (show all workings). What does the yield to maturity approach tell you and how is it used