What formula should i use for this problem.Or how should i solve it

stock growth: A stock that sold for $22 at the beginning of the year was selling for $24 at the end of the year. If the stock paid a dividend of $0.50 per share, what is the simple interest rate on an investment in this stock? (Hint consider the interest to be the increase in value plus the dividend).

The increase in value is $2 and the dividend is $.50. The stock increased its value by $2.50. Divide 2.5 by $22 (its price at the beginning of the year. This gives you a decimal number. To find the percent, move the decimal point two places to the right. Your answer should be less than 15%.

since what i get is :
0.11363636363636363636363636363636

so if i move two places to the right the answer will be 11% or 11.4%

Yes. The interest rate on this investment is 11.4%.

how can i check back?

To check back, you can use the formula for simple interest. In this case, the interest is the increase in value plus the dividend. Let's calculate it.

Increase in value = $2
Dividend = $0.50

Interest = $2 + $0.50 = $2.50

Now, calculate the interest rate using the formula:

Interest Rate = (Interest / Investment) * 100

The investment in this case is the initial price of the stock, which is $22.

Interest Rate = ($2.50 / $22) * 100 = 11.36%

So, the interest rate is approximately 11.36%. This confirms that our previous answer of 11.4% is correct.