Tiago makes three models of camera lens. Its product mix and contribution margin per unit follow:

Percentage of Unit SalesContribution Margin per UnitLens A22%$ 40Lens B3732Lens C4145

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 $190,000.
3. Determine how many units of each product must be sold to generate a profit of $82,000.