15. Two years ago Ernest purchased a car for $34,000 and it is worth $25,000 today. Last year he drove 13,569
miles and kept a record of all his expenses. His variable costs included gasoline $1,589.56; oil changes, $245.98;
and repairs, $548.11. His fixed costs were insurance, $1,105.32; and license, $285.
What is the depreciation?
What is the cost per mile?