Fuel in aeroplane when tank was full = 40,000 gallons.
Fuel left after flying for 8 hours = 14,000 gallons
Fuel consumed in 8 hours flight =40,000-14,000= 26000 gallons.
Fuel consumed in 1 hour time = 26000÷8= 3250 gallons.
Fuel consumed in remaining 3.5 hours = 3250x3.5=11375 gallons.
Total fuel consumed = 26000+11375 =37375 gallons.
Fuel left after landing =40,000 -37375=2625 gallons.
The second part is asking us to find total distance of the flight.
Total time of flight= 8+3.5=11.5 hrs
Speed of aeroplane = 550 miles per hour.
Distance covered = speed x time
Distance (Total ) covered = 550x11.5=6325 miles.
