At the beggining of a trip, Gail's odometer reading was 100 001 km. To start, she topped off her tank with 35 litres of gas to ensure it was full. During the trip, Gail brought 48 litres of gas (each time bringing the tank back to full), and at the end of the day refilled the tank completely with 45.5 litres of gas. Gail was surprised to find at that time the odometer was the next palindromic umber after 100 001. What was the average number of litre per 100 km used by Gail's car during the days drive?
