Answer:
21 miles per gallon
Explanation:
First, you need to list the information that have been given.
- A full tank of gas can hold 13 gallons of gasoline.
- Ryder used a full tank of gas to drive 273 miles.
The question is asking for how many miles per gallon the car can travel on average. So, you have to divide the number of miles that a full gas tank can give by the amount of gallons a full gas tank is.
After dividing the values, you should end up with 21 miles per gallon.