Assume that a company operates a fleet of limousines. If a limo is driven 80,000 miles during a year its average operating cost is 25 cents per mile. If a limo is driven only 60,000 miles during the year, its average operating cost is 30 cents per mile. Using the high-low method, what is the estimated variable operating cost per mile? Multiple Choice $0.12 O $0.15 $0.18 O $0.10