Requirements (a) Using the current cost system's approach of assigning MSDA expenses to customers using a rate of 37% of sales revenue, determine the operating profit associated with Mandel and with Bedell. (b) Using the activity-based costing information provided, determine the operating profit associated with Mandel and with Bedell. (c) Which of the two methods produces more accurate assignments of MSDA expenses to customers? Explain. les revenue, determine the operating profit associated with Mandel and with Bedell. (Round the profit percentages to