Answer: you will need 10.57 liters of gas.
Step-by-step explanation:
The gas efficiency of your car is 30.0mi/gal. The first step is to convert from miles per gallon to kilometers per liter.
0.6214 miles = 1 kilometer
30 miles = 30/0.6214 = 48.28 kilometers
Also,
1 gallon = 3.78 liters
Therefore, the car's gas efficiency in kilometers per liter is
48.28/3.78 = 12.77 kilometers per liter
Therefore, the number of liters of gas that you will need to complete a 135 km trip is
135/12.77 = 10.57 liters
