Suggest reasons why a knowledge sharing system could be established between rival organizations (eg,
Mastercard and Visa) for the mutual benefit of both
organizations.
(Kindly this should be done on Vclass)

A knowledge sharing system could be establish between rival organizations like Mastercard and Visa in order to improve the services they provide for their clients, as well as to attract more people and earn more money.

Even though it might seem contradictory for rival organizations to work together on sharing knowledge, it's actually not. Mastercard might have something that Visa wants and vice versa so it makes sense for them to collaborate to get what they need.

answer: a. the kind of population living in your neighbourhood.

the census explorer data tool by the us census bureau allows the user to zoom in on any neighbourhood within the united states and find the kind of people residing in that by race and age.  

the tool needs to needs to be used twice – once in order to find what type of people reside in a neighbourhood, and then to see the age groups of the people in the same neighbourhood.

answer; is the sum of all individual demands curves;