Tiago makes three models of camera lens. Its product mix and contribution margin per unit follow: Lens A Lens B Lens C Percentage of Unit Sales 23 43 34 Contribution Margin per Unit $ 49 41 54 Required: 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 $186,000. 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 nces Determine the weighted-average contribution margin per unit. Note: Round your intermediate calculations and final answer to 2 decimal places. Weighted-average CM per Unit Required 1 Required 2>