P7–9 Common stock value: Constant growth McCracken Roofing, Inc., common stock paid a dividend of $1.20 per share last year. The company expects earnings and dividends to grow at a rate of 5% per year for the foreseeable future.

a. What required rate of return for this stock would result in a price per share of $28?

b. If McCracken expects both earnings and dividends to grow at an annual rate of 10%, what required rate of return would result in a price per share of $28?