00:01
So here we're talking about market structure in terms of competition versus monopoly.
00:06
And i'll just jump ahead to the correct answer first and then explain while the others are wrong, right? so the correct answer here is going to be c.
00:17
And c says to set marginal revenue equals to marginal cost, right? both competition and monopoly do this, right? in competition, however, you usually see it.
00:31
Phrased a different way, right? in competition, price is equal to marginal revenue is equal to marginal cost.
00:39
So it's still marginal revenue equals to marginal cost.
00:41
And this is becoming, because profit is equal to revenue minus costs.
00:47
And the goal of both of these types of firms is to maximize their profits.
00:51
And so you want to maximize profits by selling units such that the change in revenue is greater than the change in cost.
00:59
And as soon as that's no longer true, marginal revenue equals marginal cost, you stop.
01:04
So why are the others wrong? let's go through them one by one.
01:09
A, in competition, this is wrong, right? in competition, each firm is small, right? and with small firms, there is no change in price when quantity in increases.
01:34
So this one is just wrong, right? in competition, you're a small firm...