ABC. Delivery Service uses the units-of-activity method in computing depreciation on its taxicabs. Each cab is expected to be driven 120,000 miles. Vehicle no. 5 cost $45,000 and is expected to have a salvage value of $1000. Vehicle no. 5 is driven 50,000 miles in year 1 and 20,000 miles in year 2. Compute the depreciation for each year?