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WACCMarket value weights The market values and after-tax costs of various sources of capital used by Ridge Tool are shown in the following table: a. Calculate the firm's weighted average cost of capital. b. Explain how the firm can use this cost in the investment decision-making process. a. The firm's weighted average cost of capital. ry, using market value weights is %. (Round to two decimal places.) . Data table (Click on the icon here in order to copy the contents of the data table below into a spreadsheet.) Source of capital Market value Individual cost Long-term debt $700,000 5.3% Preferred stock $50,000 12.0% Common stock equity $650,000 16.0% Print Done