Gardner, Inc., plans to finance its expansion by raising the needed investment capital from the following sources in the indicated proportions and respective capital cost rates: Capital Cost Source Proportion Rate Bonds 30% 13% Preferred stock 10% 9% Common stock 50% 12% Retained earnings 10% 9% 100% Calculate the weighted average cost of capital. Round answers to one decimal place. For example, 0.4567 = 45.7%. Weighted Average Cost of Capital Bonds Answer Preferred stock Answer Common stock Answer Retained earnings Answer Answer