3. Cisco Systems has total assets of $78 billion, total debt of $63 billion and net sales of $2.5 billion. Its net profit margin for the year is 20%, while the operating profit margin is 30%. Using the information in question 3, calculate the net income. b. Using the information in question 3, calculate the ROA. Using the information in question 3, calculate the ROE a. C. L. ROA tool