00:01
So first of all, let's define the fisher equation.
00:03
The fisher equation says that the real interest rate are the return you get on your investment is equal to the nominal return on your investment, which is how many extra dollars you earn minus inflation, right, which is how much prices have gone up.
00:18
So if you get 10 % more dollars, but prices go up by 10%, your purchasing power, your real return hasn't gone anywhere, right? you have to subtract, when you get extra dollars, you have to subtract off how much prices have gone up to get how much more stuff you can afford to buy because of your investment.
00:35
So in the first case, we have r is equal to 1%, and inflation is equal to 3%.
00:41
So that means that i is equal to r plus pi, which is equal to 4%.
00:48
In the second case, we have pi is equal to 5%, and i is equal to 10%.
00:56
So the real rate is i minus pi, which is equal to 5%, and i is equal to 10%, and i is equal to 10%, so the real rate is equal to 5%.
01:02
And then for c, we have r is equal to 2%, i is equal to 6%.
01:10
Inflation is equal to i minus r is equal to 4%.
01:16
Finally, d, we've got r is equal to 1%, pi is equal to 12%.
01:24
I is equal to r plus pi is equal to 13%...