The inverse market demand in a homogeneous-product Cournot duopoly is P = 100 2(Q1 + Q2)

Question:

The inverse market demand in a homogeneous-product Cournot duopoly is P = 100 – 2(Q1 + Q2) and costs are C1(Q1) = 12Q1 and C2(Q2) = 20Q2.
a. Determine the reaction function for each firm.
b. Calculate each firm’s equilibrium output.
c. Calculate the equilibrium market price.
d. Calculate the profit each firm earns in equilibrium.