Units$-$of$-$Activity Depreciation

A truck acquired at a cost of $$120,000$ has an estimated residual value of $$4,500,$ has an estimated useful life of $30,000$ miles, and was driven $2,100$ miles during the

year. Determine the following. If required, round your answer for the depreciation rate to two decimal places.

a$.$ The depreciable cost

b$.$ The depreciation rate

per mile

c$.$ The units$-$of$-$activity depreciation for the year