not sure how to work this out

3. A business purchased a car for $200,000 with an estimated useful life of 6 years and residual value of $20,000. By the start of year 5, the car is assessed and noted as being in better condition than anticipated. As a result, the total useful life of the car is now expected to be 8 years. Based on the above information, calculate the depreciation of this asset for year 5 using the straight line method. * $7,500 $15,000 $30,000 $22,500