The equity section of Jones Corporation’s statement of financial position is presented below:

Preferred stock, 6%, $100 par $40,000,000

Common stock, $4 par $10,000,000

Additional paid-in capital $20,000,000

Retained earnings $10,000,000

Equity $80,000,000

The preferred stock is cumulative and nonparticipating. All preferred dividends have been paid, and liquidation value is $110 per preferred share. What is the book value per share of Jones Corporation’s common stock?