Maghrabi Enclosure follows a moderate current asset investment policy, but it is considering whether to shift to a different strategy.  The firm's annual sales are $500,000; its fixed assets are $180,000; its target capital structure calls for 60% debt and 40% equity; its EBIT is $55,000; the interest rate on its debt is 9%; and its tax rate is 40%.  With a conservative policy, current assets will be 16% of sales, while under an aggressive policy they will be 30% of sales. What is the difference in the projected ROEs between the conservative and aggressive policies?