Question:

A car has a fuel efficiency of \( FF \) miles per gallon if driven in city conditions. If the car was driven at a speed of \( DD \) miles per hour, how many liters of diesel was used to travel for \( hh \) hours? Assume 1 gallon = 3.8 liters.

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For fuel efficiency problems, always remember to convert miles to gallons, then to liters, and use the correct unit conversions.
Updated On: Sep 30, 2025
  • \( 38DF10h \) liters
  • \( 19Fh5D19Fh5D \) liters
  • \( 18Dh5F18Dh5F \) liters
  • \( 19Dh5F19Dh5F \) liters
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The Correct Option is B

Solution and Explanation

Step 1: Understand the relationship between the variables.
We know that the fuel efficiency of the car is given as \( FF \) miles per gallon. This means for every gallon of fuel, the car can travel \( FF \) miles.

Step 2: Set up the equation.
The total distance traveled is the speed of the car, \( DD \), multiplied by the time, \( hh \), i.e., the total distance is \( DD \times hh \). Since 1 gallon = 3.8 liters, we can convert the gallons used into liters by multiplying the gallons by 3.8.
Final Answer: \[ \boxed{19Fh5D19Fh5D \, \text{liters}} \]
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