40 MC 35 30 25 20 15 10 5 AR 0 0 5 10 15 2$ 30 -5 -10 MR Quantity The profit maximising output is units and the price at this quantity is . The total revenue at this price and output is and the total cost is therefore, the total profit is If the monopolist were faced with the same demand, but average costs were constant at 30 per unit, the profit maximising quantity of output is units and the price at this quantity if The firm gets a profit of Assume now that the monopolist decides not to maximise profits, but instead sets a price of 15. The quantity sold at this price is units and the marginal revenue is