In Europe, gasoline efficiency is measured in km/L. If your car's gas mileage is 25.0mi/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.
25 mi/gal x (1 km/0.6214 mi) x (1 gal/3.78L) = ? km/L
? km/L x # L = 142 km
Solve for # L needed for the 142 km trip.
Then convert from L to gallons .
#L x (1 gal/3.78L) = ? gallons.
Note: It's probably easier to do it this way.
How many miles is 142 km? That's
142 km x (0.6214 mi/km) = ? mi
Then ? mi/25 mi/gal = ? gallons.
To find out how many liters of gasoline you would need to buy for a 142-km trip in Europe with a car's gas mileage of 25.0 mi/gal, you need to convert the car's gas mileage from miles per gallon to kilometers per liter. Here's how you do it:
First, convert the car's gas mileage from miles per gallon to kilometers per gallon using the conversion factor 1 km = 0.6214 mi:
25.0 mi/gal * 0.6214 km/mi = 15.534 km/gal
Next, convert the car's gas mileage from kilometers per gallon to kilometers per liter using the conversion factor 1 gal = 3.78 L:
15.534 km/gal / 3.78 L/gal = 4.11 km/L
Now, you have the car's gas mileage in kilometers per liter. To find out how many liters of gasoline you need for a 142-km trip, divide the distance by the car's gas mileage:
142 km / 4.11 km/L = 34.54 L
Therefore, you would need to buy approximately 34.54 liters of gasoline to complete a 142-km trip in Europe.