In Europe, gasoline efficiency is measured in km/L. If your car's gas mileage is 21.0 mi/gal , how many liters of gasoline would you need to buy to complete a 142-km trip in Europe? Use the following conversions: 1km=0.6214mi and 1gal=3.78L.
21.0 miles/gallon x (1 mile/0.621 km) x (1 gallon/3.78 L) = estimated 9 km/L but you need to redo to get a more accurate answer.
Then 9 km/L x #L = 142 km
Solve for # L.
Post your work if you get stuck.
To answer this question, we need to convert the miles per gallon (mi/gal) fuel efficiency to kilometers per liter (km/L) fuel efficiency.
First, let's convert 21.0 mi/gal to km/L:
- 1 mile is equal to 0.6214 kilometers, so we multiply 21.0 mi/gal by 0.6214 km/mi to get 13.0484 km/gal.
- Next, we convert gallons to liters. 1 gallon is equal to 3.78 liters, so we multiply 13.0484 km/gal by 3.78 L/gal to get 49.349752 km/L.
Now that we have the fuel efficiency in km/L, we can calculate the amount of gasoline needed for a 142-km trip.
To do this, we divide the distance of the trip by the fuel efficiency:
- Divide 142 km by 49.349752 km/L.
- The result is 2.878 liters (rounded to three decimal places).
Therefore, you would need to buy approximately 2.878 liters of gasoline to complete a 142-km trip in Europe.
To calculate the amount of gasoline needed for a 142-km trip in Europe, we need to convert the car's gas mileage from miles per gallon (mi/gal) to kilometers per liter (km/L).
First, let's convert the car's gas mileage from 21.0 mi/gal to km/L:
1 mi = 1.60934 km (multiplying miles by 1.60934 converts them to kilometers)
1 gal = 3.78 L (using the given conversion factor)
To convert miles per gallon to kilometers per liter, we use the following conversion:
21.0 mi/gal * 1.60934 km/mi / 3.78 L/gal = 8.945 km/L
Now that we have the car's gas mileage in km/L, we can calculate the amount of gasoline needed for the 142-km trip:
142 km / 8.945 km/L = 15.88 L
Therefore, you would need to buy approximately 15.88 liters of gasoline to complete the 142-km trip in Europe.