When teddy filled up the tank on his moped it cost 13.16 how much gas did his moped need?

To determine how much gas Teddy's moped needed, we would need to know the price per gallon or liter of gas at the time of filling up. Without this information, we cannot calculate the volume of gas purchased. If the price per gallon or liter is provided, we can simply divide the total cost ($13.16) by that price to find out how much gas he filled.