Answer:
4 years.
Explanation:
Given : A new car that costs $25,000 depreciates by 12% each year.
To Find: In about how many years will the car be worth $15,000?
Solution:
Principal = $25000
Rate of decrease = 12%
Amount = $15000
Equation:

x will give the years in after which car value will be $15000
So,




Thus in about 4 years car value will be $15,000.