Eva M.

asked • 02/04/20

How do I find the years? without a graphing calculator??

A fully loaded Toyota Forerunner sells for 42,000. It depreciates 12% per year from the date of purchase. How many years will it take to be worth half its purchase price?

I have found this 42,000(1-0.12)^x


But I have no idea how to find the years that it will take to be worth half its purchase price and the half of 42,000 is 21000...

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