Benson Corp. and Sununu Inc. are both makers of hot airballoons. Benson Corp.s net income is $150 million, sales are $1.5 billion, assets are $1.5 billion, and debt is $1.0 billion. Sununu Inc.s profit margin is 20%, total asset turnover is 2.0, and equity multiplieris 1.0. What profit margin does Benson Corp. need so that it matches Sununu Inc.s ROE exactly?