Who is Marginal Cost?

Marginal cost is the extra cost you pay to get one more thing.

Imagine you’re at a candy store, and you love gummy worms. You buy 5 of them for $2.50, that’s pretty good! But then you see your friend eating a gummy worm and want another one. The store sells each gummy worm individually for 50 cents. So the marginal cost of getting one more gummy worm is just 50 cents.

Think of it like this: when you're buying things, sometimes you get a deal if you buy a lot, like buying a whole bag instead of one by one. But if you only want one more, you don’t need to pay for the whole bag again. You just pay what that extra thing costs.

So marginal cost helps us understand how much it really costs to get just one more item, like that last gummy worm or the next toy in your collection!