GHI Corporation presents the following financial figures:

• Total assets: $1,800,000
• Total liabilities: $700,000
• Preferred stock: $120,000
• Common stock: $450,000
• Additional paid-in capital: $200,000
• Retained earnings: $330,000
• Net income: $280,000

Find out: a) Times interest earned ratio b) Price-to-earnings ratio c) Return on common equity d) Earnings before interest and taxes (EBIT)