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.

Answer 1

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.