it burns the fuel
Pratt and Whitney are famous Boeing engine manufacturers.
The 4 engine Boeing 707 was replaced by the 2 engine 757.
two
The Boeing 777 is a two engine jet airplane. If one engine fails and the other engine is still working, yes it can still fly with one engine.
the Boeing 777 has a twin engine system (2 engines).
The Boeing planes, and most modern multi-engine aircraft, can still manage to fly even if one engine stopped to function.
on the wings
turbofan
The Boeing 777 has 2 engines. These are very powerful Rolls Royce Trent 895.
The CFM International CM56-7B27 on their Boeing 737-800 while the CFM International CFM56-3B-2 on their Boeing 737-400
The Boeing 777.
The Boeing 707 is a medium-to-long range four engine jet airliner designed and produced by the Boeing Airplane Company in the 1950s. It is equipped with 4 Pratt and Whitney JT3D engines.