00:01
So when you're reading this question and you see velocity, you should immediately recognize this as a question dealing with the quantity theory of money, right? based around the equation, mv is equal to p y, right? this has got to hold true, right, at a very basic level.
00:15
This is money used.
00:17
The amount of money is m.
00:19
The velocity is how often it's used.
00:21
And this is also money used, right? that's just the total, p .y is just nominal gdp.
00:27
And that's just the amount of money that's used in the economy to buy stuff.
00:31
So these things have to be equal by definition.
00:34
So now we're told that these things are changing.
00:38
But we know that if they're changing, the equation has to be balanced...