The following information relates to DTF Corporation: DTF Corporation has 400,000 preference shares trading at $7 each. The company has 10 million ordinary shares outstanding that are currently priced at $6 each and have a beta of 0.30. Five years ago the company issued bonds with a total face value of $6 million. One bond has a face value of $1,000,000. The bonds have a coupon rate of 9% p.a. and coupons are paid semi-annually. The bonds mature in eight years from today. The bonds currently yield 7% per annum. The return on the stock market is 9% p.a., the government bond rate is 3% p.a., and the company tax rate is 30%. What proportion of the firm's capital structure is ordinary equity?