Molly's Mobile Pet Grooming Service recently purchased a cargo van for $27,500. For depreciation purposes, the van is expected to to have a useful life of 200,000 miles and have a trade-in value of $5000. Molly uses the units-of-production method to calculate depreciation. What is the depreciation per mile? Round to the nearest tenth of a cent when necessary. $ Molly drives her van 50,000 miles in the first year. What is the book value of the van at the end of the first year? $ What is the annual depreciation in a year when the van is driven 70,000 miles?