Tiago makes three models of camera lens. Its product mix and contribution margin per unit follow: Suppose the product mix has shifted to 41/30/29. Required: 1. Determine the new weighted-average contribution margin per unit. (Round your intermediate calculation to 2 decimal places. Round your answer to 2 decimal places.) 2. Determine the number of units of each product that Tiago must sell to break even if fixed costs are $179,000. (Round intermediate calculations to nearest whole number. Round your answers up to the next whole number.) 3. Determine how many units of each product must be sold to generate a profit of $75,000. (Round intermediate calculations to nearest whole number. Round your answers up to the next whole number.)