Park Company currently sells 25,000 units a month for $50 each, with a variable cost of $20 per unit, and fixed costs of $300,000. Net operating income is currently $450,000. If the price is increased to $60 per unit, and variable cost per unit and fixed costs remain the same, how many units must be sold to earn the same net operating income of $450,000? 22,500 18.750 h 12.500 12.000