The following is the stockholders' equity section of harbor co.'s balance sheet on december 31: common stock $10 par, 100,000 shares authorized, 50,000 shares issued of which 5,000 have been reacquired, and are held in treasury $ 450,000additional paid-in capital common stock 1,100,000retained earnings 800,000subtotal $2,350,000less treasury stock (150,000)total stockholders' equity $2,200,000harbor has insignificant amounts of convertible securities, stock warrants, and stock options. what is the book value per share of harbor's common stock?