rate of return not given

Question #2 (2+2+2) The Haris - Arshi Company is attempting to establish a current assets policy. Company has allocated $900,000 to fixed assets and the firm plans to maintain a 50 percent debt to assets a ratio. The interest rate is 10% on all debts. Company is considering three alternative current asset policies: this can be 40, 50 or 60 percent of projected sales. The company expects to earn 20 percent profit before interest and taxes on sales of $3 million. Company's effective federal-plus-state-tax rate is 15 percent. What is the expected return on equity under each alternative? Draw a descriptive conclusion for each Current Asset Investment Policy