00:01
So here we're being asked to explain the aggregate demand, aggregate supply model, right? so that's a relationship between two variables, right? output and the price level.
00:14
We have ad and as, and the intersection of those two forces give us equilibrium at a level of prices and a level of output.
00:25
And now we have this news story, right? so we have strong growth, which means that y is going up, and we have price stability.
00:37
And price stability means that prices are going flat.
00:41
So the economy must be going this way, right? the new equilibrium we need to explain is over here, right, at the same level of prices and at a higher level of output.
00:52
So we're looking for a story that moves the economy this way.
00:55
The only way to do that is to shift the aggregate demand.
00:59
To the right and shift the aggregate supply to the right.
01:06
So ad has to go right and as has to go right as well.
01:10
That's the only way that we can explain it.
01:13
So the correct answer here is b, right? both go right.
01:24
So this is question a and in question b, we have to do something very similar, right? so b we have a different story.
01:33
So if i redraw this really quick, a -d and as, prices output...