To calculate the rate of return, we first need to determine the profit or loss from the sale of the stock. The total cost of purchasing the shares is given as $381. The selling price of the shares is $475, but we must account for the commission of $6 on the sale. Therefore, the profit or loss can be calculated using the formula: Profit or Loss = Selling Price - Total Cost - Commission. Substituting the values, we have: Profit or Loss = $475 - $381 - $6 = $88. Next, we calculate the rate of return using the formula: Rate of Return = (Profit or Loss / Total Cost) * 100. Plugging in the numbers gives us: Rate of Return = ($88 / $381) * 100, which is approximately 23.09%. This means that the investor made a return of about 23.09% on their investment.