( WACC) Margo Corporation is a major producer of lawn care products. Its stock currently sells for $63 per share; there are 10.5 million shares outstanding. It has debt with a book value of$400 million. Margo bonds yield 6% and trade at 100% of face value. Bonds mature in 10 years. The risk-free rate is 8%, the market risk premium is 9% and Margo has a beta equal to 1.8. The tax rate is 24%.The WACC is ___________%