00:02
We have a graph of a monopolist demand curve, marginal revenue, and marginal cost, and we want to answer some questions about that monopoly compared to perfect competition.
00:18
Part a, if we have perfect competition, how much will be produced and what will be the price? in perfect competition, we know that we produce to the point where price is equal to marginal cost.
00:31
So that would be the point is at point r, which gives us a quantity of s and a price of e.
00:43
Which area is consumer surplus under perfect competition? consumer surplus is the difference between the benefit we receive and the price that we have to pay.
00:56
And so the consumer surplus would be everything above the price of e and below the demand curve.
01:02
Out to point r.
01:04
It would be the triangle a -r.
01:09
If this is a monopoly, how much will they produce and what price would it charge? in monopoly we produce as long as marginal revenues greater than or equal to marginal cost.
01:21
So our quantity would be i and our price when we go up to the demand curve to point f we see that that's a price equal to point b...