A couple bought some stock for $30 per share that pays an annual dividend of $0.90 per

Question:

A couple bought some stock for $30 per share that pays an annual of $0.90 per share. After 1 year the price of the stock was $33. Find the simple interest rate on the growth of their investment.
Dividend
A dividend is a distribution of a portion of company’s earnings, decided and managed by the company’s board of directors, and paid to the shareholders. Dividends are given on the shares. It is a token reward paid to the shareholders for their...