Assume the following shares outstanding : Preferred stock, 6% , Tk. 50 per value, cumulative, 1000 shares with dividends in arrears 3 years, for 20-1, 20-2 and 20-3. Common stock, Tk. 100 per value, 2000 shares. Total dividends declared in 20-4 were Tk. 50,000. The total amount of dividends to which common stockholders are entitled is :