Tiago makes three models of camera lens. Its product mix and contribution margin per unit follow Percentage of Unit sales 23% 36 Contribution Margin per unit $41 33 46 Lens A Lens B Lens C 41 Required: 1. Determine the weighted-average contribution margin per unit. (Round your intermediate calculations and final answer to 2 decimal places.) Weighted Average CM per unit 2. Determine the number of units of each product that Tiago must sell to break even if Tixed costs are $181,000. (Round intermediate calculations and final answers to the nearest whole number.) Units of A Units Units Units of B Units of C Units 3. Determine how many units of each product must be sold to generate a profit of $75,000. (Round intermediate calculations and final answers to the nearest whole number.) Units Units of A Units of B Units Units of C Units