Calculating Residual Income East Mullett Manufacturing earned operating income last year as shown in the following income statement: Sales $531,250 Cost of goods sold 280,000 Gross margin $251,250 Selling and administrative expense 184,800 Operating Income $66,450 Less: Income taxes ( 40% ) Net income 26,580 $39,870 At the beginning of the year, the value of operating assets was $390,000. At the end of the year, the value of operating assets was $460,000. East, Mullett requir minimum rate of return of 10%. Required: For East Mullett, calculate: 1. Average operating assets 2. Residual income