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East Bay Electronics, Inc. sells Surround Stereo and Home Theater Systems. The business is divided into two divisions along product lines. Variable costing income statements for the current year are presented below: Required: (a) Determine the sales mix and contribution margin ratio for each division. (b) Calculate the company's weighted-average contribution margin ratio. (c) Calculate the company's breakeven point in dollars. (d) Determine the sales level, in dollars, for each division at the breakeven point