Hilarious George Co. maintains a rate of return of 15% on its equity. Management currently pays out all of its earnings as dividends. Hilarious George Co. anticipates year-end earnings of $2.40 per share, and investors expect a 10% rate of return on stocks facing the same risks as Hilarious George Co.

If Hilarious George Co. plowed back 40% of its earnings into the firm, what is the companys sustainable growth rate? (Enter as a decimal. For example, if your answer was 12.34%, you would enter 0.1234)