E6.10 (LO 2), AP Personal Electronix sells computer tablets and MP3 players. The business is divided into two divisions along product lines. CVP income statements for a recent quarter's activity are presented below. Instructions a. Determine the sales mix percentage based on sales revenue and contribution margin ratio for each division. b. Calculate the company's weighted-average contribution margin ratio. c. Calculate the company's break-even point in dollars. d. Determine the sales level in dollars for each division at the break-even point