Below is the long-term and capital section of the balance sheet of Mt. Rushmore Mining Co.:

Category	Value
Notes Payable	$6,000,000
Bonds Payable	1,000,000
Preferred Stock	500,000
Common Stock	6,000,000
Retained Earnings	5,000,000

Interest of notes is 10%, bonds payable 8%, preferred stock dividends are 5% and common shareholders opportunity cost is 25%. Tax rate is 30%. Compute the average weighted cost of capital.