The unit depreciation rate can be found by dividing the depreciation base by the estimated useful life, in miles or whatever units happens to be used.

In this case, the depreciation base is 60,000 - 5,000 = $55,000 The useful life is 150,000 miles The unit depreciation rate, therefore, is 55,000 ÷ 150,000 = $0.367/mile

Tate rents some table 362 for some chairs $3 for each party get spends $500 enter an equation to find the number of chairs,c, that Tata rents and how many chairs