The Decker Car Rental Company charges $25.40 plus 20¢ per mile to rent a car. The equation 25.4+0.2m=c represents the cost to rent a car from Decker. Bob's Car Rental charges $15 plus 60¢ per mile. The cost to rent a car from Bob's is represented by the equation 15+0.6m=c . At what mileage (m) would the cost of renting a car be the same for both companies?