Carson, Incorporated, which uses the high-low method, reported total costs of $20.5 per unit at its lowest activity level, when production equaled 14,000 units. When production doubled, at its highest activity level, the total cost per unit dropped to $13. Carson would estimate varlable cost per unit as: Virgil Corporation has a selling price of $35 per unit, and variable costs of $24 per unit. When 12,000 units are sold. profits equaled $60,500. How many units must be sold to break even