On January 1, 2017, Leonard Industries purchased 1,000 treasury shares. Other information regarding Leonard Industries is provided below.

                                                                                            2016                 2017

Net income...............................................................£200,000.......£210,000

Dividends on preference shares........................................£30,000.........£30,000

Dividends on ordinary shares..........................................£20,000.........£25,000

Weighted-average number of ordinary shares outstanding..........10,000............9,000

Ordinary shareholders' equity beginning of year...................£600,000........£760,000

Ordinary shareholders' equity end of year..........................£760,000........£830,000

Compute return on ordinary shareholders' equity for each year.