Sunland Company purchased a delivery truck for $36,000 on January 1, 2022. The truck has an expected salvage value of $6,000, and is expected to be driven 100.000 miles over its estimated useful life of 8 years. Actual miles driven were 12,200 in 2022 and 11,200 in 2023. (a1) Calculate depreciable cost per mile under units-of-activity method. (Round answer to 2 decimal places, e.g. 0.50.) Depreciable cost $ per mile