Need explanation

a. From the supply schedule and the combined Brazilian and Canadian demand schedule, what will be the new equilibrium price at which Fihiopian coffee growers will sell Lthiopian coffee beans, and what is the total quantity that will be consumed by both countries?? b. With the Ethiopian coffee growers selling to both the Canadians and the Brazilians, what will be the new equilibrium price paid and quantity demanded by Brazilian consumers?? c. With the Ethiopian coffee growers selling to both the Canadians and the Brazilians, what will be the new equilibrium price paid and quantity demanded by Canadian consumers