Sunland Bus Lines uses the units-of-activity method in depreciating its buses. One bus was purchased on January 1,2025, at a cost of $127,000. Over its 4 year useful life, the bus is expected to be driven 216,000 miles. Salvage value is expected to be $8,200. (a) Your answer is correct. Compute the depreciation cost per unit. (Round answer to 3 decimal places, es. 6.251.) Deprechationcost per unit Prepare a depreciation schedule assuming actual mileage was 2025,50,800;2026,66,000;2027,52,000; and 2028, 47,200. (Round depreciation cost per unit to 3 decimal places, es. 0.125 and other answers to 0 declmal places, es. 125.)