A used-car costs $5,000.
You figure you can get 4 years out of it.
You drive 10,000 miles per year.
Your car insurance costs $1,200 per year.
You figure you'll spend $400 per year on maintenance.
Gas costs $4 per gallon, and the car gets 25 miles per gallon.
What will your average cost (all costs included) per mile be over the 4 years?