00:01
So in this problem, we're looking to find the equilibrium interest rate, and then also if the federal reserve bank wants to increase the equilibrium interest rate by 10 percentage points from its value in that same part a, we're looking to find the value or the, it says at what level should it set the supply of money.
00:22
Okay, so to find this equilibrium interest rate, let's set the money demand equal to the money supply.
00:29
So we've got a money demand, which is equal to the money supply.
00:40
So that is y, 1 .25 minus i, equal to the money supply.
00:58
And we substitute, we get 100 times 0 .25 minus i is equal to 20.
01:10
So we get 25 minus 100 i equals 20.
01:27
And so from this, we get i equals 0 .05 or 5 percent.
01:35
So the equilibrium interest rate is 5 percent.
01:58
And that's part a...