What is the necessary fuel in gallons for an airplane to travel 2,500 miles if it used 60 gallons for 750 miles?

To determine the necessary fuel for the airplane to travel 2,500 miles, it's important to first establish the fuel consumption rate based on the given distance and fuel usage. The airplane uses 60 gallons for a trip of 750 miles.

To calculate the fuel consumption per mile, divide the total gallons used by the distance traveled:

60 gallons / 750 miles = 0.08 gallons per mile.

Next, to find the total fuel required for a distance of 2,500 miles, multiply the per-mile fuel consumption by the new distance:

0.08 gallons per mile × 2,500 miles = 200 gallons.

This calculation demonstrates that 200 gallons of fuel are necessary to cover the 2,500 miles based on the established fuel usage rate. Hence, this confirms that the correct answer is 200 gallons, as it directly reflects the fuel needs of the aircraft proportionate to the distance it intends to travel.