Tiago makes three models of camera lens. Its product mix and contribution margin per unit follow Percentage of Unit sales Lens A 21% Lens B Lens C 43 36 Required: Contribution Margin per unit $48 40 53 1. Determine the weighted-average contribution margin per unit. 2. Determine the number of units of each product that Tiago must sell to break even if fixed costs are $193,000. 3. Determine how many units of each product must be sold to generate a profit of $77,000. Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3 Determine the weighted-average contribution margin per unit. (Round your intermediate calculations and final answer to 2 decimal places.) Weighted Average CM per unit Required 2>