The table shows the demand curve for barrels of springwater sold by James. Water Monopoly Price per barrel Number of barrels $16 0 15 1 14 2 13 3 12 4 11 5 10 6 9 7 8 8 7 9 6 10 If James's marginal and average total costs are $10, and his firm is in a perfectly competitive industry, the industry's output is _____ barrels more than if the firm is a monopoly