Harrison, Inc., has the following book value balance sheet:

Balance Sheet
Assets			Liabilities and equity
Current assets	$ 140,000,000		Total debt	$ 250,000,000
			Equity
			Common stock	30,000,000
			Capital surplus	77,000,000
Net fixed assets	415,000,000		Accumulated retained earnings	198,000,000
			Total shareholders' equity	$ 305,000,000
Total assets	$ 555,000,000		Total debt and shareholders' equity	$ 555,000,000

a.	What is the debtequity ratio based on book values?

b.	Suppose the market value of the company's debt is $251.5 million and the market value of equity is $685 million. What is the debtequity ratio based on market values?