Tiago makes three models of camera lens. Its product mix and contribution margin per unit follow: Percentage of Unit Contribution Margin per sales unit Lens A 22% $36 Lens B 39 28 Lens C 39 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 Iper unit 2. Determine the number of units of each product that Tiago must sell break even if fixed costs are $185,000. (Round intermediate calculations and final answers to the nearest whole number.) Units Units of Units of B Units of Units Units 3. Determine how many units of each product must be sold to generate profit of $78,000. (Round intermediate calculations and final answers to the nearest whole number.) Units Units of A Units of B Units of Units Units