I think the First reason is; it provides the best way of business communication.
Second reason, streamline communication
Third reason cost effective resource sharing :) (hope this helps)
Real time system means that the system is subjected to real time, i.e., response should be guaranteed within a specified timing constraint or system should meet the specified deadline. For example: flight control system, real time monitors etc.
Answer:
I think the answer would be 60x something but I'm not for sure