First, let's calculate the total amount of dividends received:
Dividend per share = $0.52
Total shares = 45
Total dividends received per year = 4 x $0.52 x 45 = $93.60
Total dividends received from 2011 to 2015 (5 years) = $93.60 x 5 = $468.00
Next, let's calculate the total amount paid for the shares:
Shares purchased = 45
Purchase price per share = $80.75
Total cost of shares = 45 x $80.75 = $3,633.75
Finally, let's calculate the total amount received from selling the shares:
Shares sold = 45
Sale price per share = $146.00
Total proceeds from selling shares = 45 x $146.00 = $6,570.00
Now we can calculate the cumulative return:
Total return = total proceeds - total cost + total dividends
Total return = $6,570.00 - $3,633.75 + $468.00 = $3,404.25
To calculate the percentage return, we need to divide the total return by the total cost and multiply by 100:
Percentage return = (total return / total cost) x 100%
Percentage return = ($3,404.25 / $3,633.75) x 100% = 93.71%
Therefore, Trent and Patricia's cumulative return was $3,404.25 and their percentage return was 93.71%.