SOLUTION: Suppose that the rate of inflation for the last four years was 3.9% per year. If a home costs $125,000 today, how much would it have cost 4 years ago?

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Question 750809: Suppose that the rate of inflation for the last four years was 3.9% per year. If a home costs $125,000 today, how much would it have cost 4 years ago?
Answer by htmentor(1343) About Me  (Show Source):
You can put this solution on YOUR website!
Let P0 = the original purchase price
Let P(n) = the value of the home n years after purchase
If the inflation rate is 3.9%, the value after n years is
P%28n%29+=+1.039%5En%2AP0
Solve for P0:
P0+=+P%28n%29%2F1.039%5En
After n = 4 years, P(n) = 125,000:
P0+=+125%2C000%2F1.039%5E4
P0 = $107263