The most recent financial statements for Schenkel Co. are shown here:

Income Statement				Balance Sheet
Sales	$	16,400		Current assets	$	11,200		Debt	$	15,700
Costs		10,500		Fixed assets		27,000		Equity		22,500
Taxable income	$	5,900		Total	$	38,200		Total	$	38,200
Taxes (40%)		2,360
Net income	$	3,540

Assets and costs are proportional to sales. Debt and equity are not. The company maintains a constant 30 percent dividend payout ratio. No external equity financing is possible.

What is the sustainable growth rate?