Answer:
Accumulated depreciation on car at the end of year 2 will be 22,500
Step-by-step explanation:
The unit-of use Method recognize depreciation base on the use of a cost driver. This cost driver could be miles, number of units produced, or others.

(60,000-10.000)/100,000 = .5 rate per mile
acumulated depreciation at year 2

25,000 + 20,000= 45,000 total miles driven
45,000 * 0.5 = 22,500