If you used 16 gallons of fuel to drive 400 miles, what is your miles per gallon (MPG)?

To determine the miles per gallon (MPG), you need to use the formula:

[ \text{MPG} = \frac{\text{Total miles driven}}{\text{Total gallons of fuel used}} ]

In this scenario, you drove 400 miles and used 16 gallons of fuel.

Calculating the MPG:

[ \text{MPG} = \frac{400 \text{ miles}}{16 \text{ gallons}} = 25 \text{ MPG} ]

This calculation shows that for every gallon of fuel used, the vehicle traveled 25 miles. This value represents the efficiency of the vehicle in terms of fuel consumption, indicating that it can cover a significant distance per gallon of fuel. Understanding MPG is critical for evaluating vehicle performance and making decisions related to fuel efficiency and cost.

Hence, the correct answer reflects the accurate calculation of this efficiency measure.