YZ Corporation's financials include:

• Total assets: $1,700,000
• Total liabilities: $550,000
• Common stock: $500,000
• Preferred stock: $120,000
• Retained earnings: $450,000
• Net income: $300,000
• Total revenues: $1,300,000

Determine: a) Debt-to-total-assets ratio b) Price-to-book ratio c) Return on common equity d) Earnings per share