There are two identical firms (with cost functions C1(Q)=C2(Q)=Q which operate on the market with demand P=10-Q, where Q is total quantity on the market, Q=Q1+Q2
A. Find the equilibrium Q and P if this industry would be perfectly competitive
B. Find the Cournot equilibrium Q and P for each firm.
C. Find the equilibrium Q and P for each firm assuming that the firms collude and share the profit equally.