(Image source: aspireaviation.com) In an effort to modernize its fleet of airplanes, Cathay Pacific Airways Limited (HKG:0293), a Hong-Kong based international airline provider has agreed to acquire 21 Boeing 777X jets at a price tag of $7.48 billion. The aircrafts are the new versions of Boeing’s 777 series lines that consume less fuel. The Boeing 777X aircrafts are slated to hit the market in 2020.