How to quickly calculate marginal costs in a table #economics

Added: 2026-05-25

[00:00:00]Everyone to calculate marginal cost. So, marginal cost is the change in total cost divided by the change in quantity. Now, the change in quantity here is one. So, you can see output is changing by one. So, we're just dividing by one. So, really it's just the change in total cost. Now, the total change in total cost comes from the change in variable cost. So, we can actually also use the change in variable cost. So, uh to go from zero to one is an additional 60. Now, what some people find is easier to just subtract this uh from this and you get you get your 60 there.

[00:00:39]I say to myself, what do I have to add to this to get to here? It's the same thing.

[00:00:44]Um there is no marginal cost at zero because we can't start with a negative one product. All right, the second marginal cost, I'll just go through these quickly. You can see that one is 30.

[00:00:55]And that one is 20.

[00:00:57]And then 40.

[00:01:00]Hard to read.

[00:01:02]Uh 80.

[00:01:05]120.

[00:01:07]Are we going up by 40 now?

[00:01:09]Uh 160.

[00:01:12]And then 200. And that's how to calculate marginal cost real quick in a table.