While driving your rental car on your vacation in Europe, you find that you are getting 13.9 km/L of gasoline. What does this value correspond to in miles per gallon?

Question

While driving your rental car on your vacation in Europe, you find that you are getting  km/L of gasoline. What does this value correspond to in miles per gallon?

Answer 1

Using certain conversion factors, one can solve this by dimensional analysis.

1 mile = 1.61 kilometer

1 US gallon = 3.79 liter

13.9 km/L x 3,79 L/gal x 1 mile/1.61 km = 32.7 mi/gal

Answer 2

13.6Km/L x 1000m/1Km x 100cm/1m x 1in/2.54cm x 1ft/12in x 1mile/5280ft x 3.78541L/1gallon = the answer