Final answer:
Eleanor can drive a total of 6612 miles on 19 tanks of gas, calculated by multiplying 348 miles per tank by 19 tanks.
Step-by-step explanation:
The student is asking how many miles Eleanor can drive on 19 tanks of gas if she can drive an average of 348 miles on one tank. To answer this, we simply multiply the miles Eleanor can drive on one tank by the number of tanks she has, which is 19. The calculation would be:
348 miles/tank × 19 tanks = 6612 miles.
Therefore, Eleanor can drive 6612 miles using 19 tanks of gas.
Fuel efficiency refers to the measure of how effectively a vehicle or an engine utilizes fuel to generate power and perform work. It's typically expressed as the distance traveled per unit of fuel consumed. The most common units used to measure fuel efficiency are miles per gallon (mpg) in the United States or kilometers per liter (km/l) in many other countries.
For instance, if a car travels 300 miles and consumes 10 gallons of fuel, its fuel efficiency would be 30 mpg (miles per gallon) because it can travel 30 miles for every gallon of fuel consumed.