A car travels 150 km on 12 L of fuel. What is the average fuel efficiency in km/L?

• A. 10 km/L
• B. 12 km/L
• C. 12.5 km/L
• D. 15 km/L

Answer: (C)

Fuel efficiency is how far you can travel per liter of fuel. To find it, divide the distance by the amount of fuel used. Here, 150 km were driven on 12 liters, so the average efficiency is 150 ÷ 12 = 12.5 km per liter. That matches 12.5 km/L. If you check the other numbers, they would require different amounts of fuel for the same distance: 10 km/L would need 15 L, 12 km/L would need 12.5 L, and 15 km/L would need 10 L. So 12.5 km/L is the correct result.