To calculate the realized return, we need to consider both the capital gain and the dividends received.
Capital gain = Sale price - Purchase price = $55 - $50 = $5 per share
Dividends = $1 per share
Total gain = Capital gain + Dividends = $5 + $1 = $6 per share
Realized return = Total gain / Purchase price = $6 / $50 = 0.12 or 12%
Therefore, the realized return on the investment was 12%.