Contemporary Mathematics for Business & Consumers 8th Edition by Robert Brechner,Geroge Bergeman

تمرين 83

USA Today reported that Ethiopian Airlines had confirmed a $3 billion order for 12 A350 aircrafts from Airbus.
a. What was the average cost per plane
b. It was also reported that Airbus planned large wingtip devices on the A320 aircraft, reducing fuel burn by 3.5% and saving about $220,000 a year per plane. How much will these fuel savings per year amount to for a fleet of 12 of these aircraft