Answer:
The profit maximizing output for a monopolist is the output level where marginal cost is equal to marignal revenue.
Explanation:
Price Q Demanded Marginal Revenue Marginal Cost
$76 100 $76 $25
71 200 66 68
66 300 56 56
61 400 46 82
56 500 36 76
51 600 26 48
Arranging the information in the chart above, we can see that for a quantity demanded of 300 units, and a price of $66, marginal revenue and marginal cost are exactly the same, $56.
Thus, the profit-maximizing level of output is 300 units.