Question: how to calculate rate of return of stock?
Answer: If the investor sells the stock for $80, his per share gain is $80 - $60 = $20. In addition, he has earned $10 in dividend income for a total gain of $20 + $10 = $30. The rate of return for the stock is thus a $30 gain per share, divided by the $60 cost per share, or 50%.